Author: Dr Val Phua
Estimated reading time: 24 minutes
Good nutrition supports healthy eyes, but there is no single food that guarantees perfect vision.
The eyes depend on a continuous supply of:
- Oxygen
- Glucose
- Vitamins
- Minerals
- Healthy fats
- Antioxidants
- Amino acids
These nutrients support structures including:
- The tear film
- Cornea
- Natural lens
- Retina
- Macula
- Optic nerve
- Small blood vessels supplying the eye
A healthy diet can also protect vision indirectly by reducing the risk or severity of:
- Diabetes
- High blood pressure
- High cholesterol
- Cardiovascular disease
- Obesity
- Nutritional deficiencies
These systemic conditions can affect the retinal circulation, optic nerve and other parts of the eye.
However, food cannot usually:
- Reverse an established cataract
- Restore retinal cells already lost from macular degeneration
- Regenerate a damaged optic nerve
- Reverse axial myopia
- Reattach a detached retina
- Remove diabetic macular oedema
- Replace glaucoma medication
- Replace anti-VEGF injections
- Guarantee freedom from future eye disease
The strongest nutritional approach is not a single vitamin, berry or supplement.
It is an overall eating pattern based on:
- Green leafy vegetables
- Colourful fruit and vegetables
- Fish
- Legumes
- Nuts and seeds
- Wholegrains
- Eggs
- Lean protein
- Unsaturated fats
- Limited refined carbohydrates and highly processed foods
A Mediterranean-style dietary pattern has been associated with a lower risk of developing or progressing to advanced age-related macular degeneration. A 2024 meta-analysis found that medium-to-high adherence was associated with approximately an 18% lower risk of AMD, although the evidence was predominantly observational and cannot prove that the diet alone caused the reduction.
Nutrition also has an important, specific role in selected patients with age-related macular degeneration.
The AREDS2 supplement can reduce the risk of progression from intermediate to advanced AMD by approximately 25%.
It is not a general eye vitamin.
It does not prevent AMD in people without the condition, does not benefit early AMD in the same way and does not prevent cataract.
The central message is:
Eat for the health of your whole body rather than searching for one miracle eye food. A varied, minimally processed diet supports retinal and vascular health, while supplements should be reserved for a proven deficiency or a specific medical indication such as intermediate AMD.
The Quick Answer
What Are the Best Foods for Healthy Eyes?
Useful foods include:
- Spinach
- Kale
- Chye sim
- Kai lan
- Broccoli
- Peas
- Sweetcorn
- Carrots
- Pumpkin
- Sweet potato
- Red and yellow peppers
- Tomatoes
- Citrus fruit
- Berries
- Kiwi fruit
- Eggs
- Salmon
- Sardines
- Mackerel
- Tuna
- Tofu
- Tempeh
- Beans
- Lentils
- Nuts
- Seeds
- Oats
- Brown rice
- Wholemeal bread
These foods provide different combinations of:
- Lutein
- Zeaxanthin
- Beta-carotene
- Vitamin C
- Vitamin E
- Zinc
- Omega-3 fatty acids
- Fibre
- Plant polyphenols
No single item supplies every nutrient.
Variety is more important than eating large quantities of one supposed “superfood”.
Are Carrots the Best Food for the Eyes?
Carrots are nutritious, but they are not uniquely powerful.
They contain beta-carotene, which the body can convert into vitamin A.
Vitamin A is essential for:
- Normal retinal function
- Night vision
- Ocular-surface health
- Tear and epithelial function
Severe vitamin A deficiency can cause:
- Night blindness
- Conjunctival dryness
- Corneal damage
- Permanent visual loss
However, eating extra carrots does not give a well-nourished person:
- Better-than-normal night vision
- Freedom from glasses
- Reversal of myopia
- Protection from every eye disease
Vitamin A deficiency is uncommon in people eating a varied diet but can occur in association with malabsorption, inflammatory bowel disease, pancreatic disease or bariatric surgery.
Should Everyone Take an Eye Vitamin?
No.
Most healthy people should obtain nutrients from food rather than routine high-dose supplements.
Supplements may be appropriate when there is:
- A proven vitamin or mineral deficiency
- Malabsorption
- A restricted diet
- Pregnancy-related nutritional advice
- A medical condition requiring supplementation
- Intermediate AMD
- Advanced AMD in one eye, with the fellow eye at risk
High-dose products can cause:
- Medication interactions
- Bleeding risk
- Liver toxicity
- Copper deficiency
- Gastrointestinal symptoms
- Increased lung-cancer risk from beta-carotene in smokers and former smokers
Supplement use should be discussed with a doctor, particularly when the person takes blood thinners or has kidney, liver or other chronic disease.
Do Lutein and Zeaxanthin Protect the Macula?
Lutein and zeaxanthin are carotenoids concentrated within the macula.
They form part of the macular pigment and help filter light and manage oxidative stress.
Good dietary sources include:
- Spinach
- Kale
- Chye sim
- Kai lan
- Broccoli
- Peas
- Sweetcorn
- Egg yolk
Higher dietary intake has been associated with lower risks of selected age-related eye conditions, but observational associations do not prove that supplements will prevent disease in every person.
Is Fish Good for the Eyes?
Fish can be part of an eye-healthy diet.
Oily fish supplies:
- DHA
- EPA
- Protein
- Vitamin D
- Other nutrients
The retina contains a high concentration of DHA.
Observational studies have associated higher fish and dietary omega-3 intake with a lower risk of AMD. A 2021 meta-analysis found associations with lower risks of both early and late AMD.
However, omega-3 supplement trials have not shown that fish-oil capsules:
- Prevent AMD
- Improve the AREDS2 formula
- Prevent cataract
- Reliably treat dry-eye disease
Food and capsules should not be assumed to have identical effects.
Can Food Prevent Cataracts?
No diet can guarantee that a cataract will not develop.
A diet rich in fruit and vegetables is associated with better general health, and higher lutein and zeaxanthin intake has been associated with a lower risk of nuclear cataract in observational studies.
However, randomised trials have not shown that high-dose:
- Vitamin C
- Vitamin E
- Beta-carotene
- AREDS supplements
prevent or slow cataracts in well-nourished adults.
Can Diet Prevent Diabetic Retinopathy?
Nutrition is central to diabetes management and may reduce retinopathy risk indirectly through better control of:
- Blood glucose
- Blood pressure
- Weight
- Cholesterol
- Cardiovascular risk
A systematic review led by Singapore researchers found that fruit, vegetables, fibre, fish and Mediterranean dietary patterns were generally associated with lower diabetic-retinopathy risk, but much of the evidence remained observational.
Diet does not replace:
- Regular retinal screening
- Diabetes medication
- Blood-pressure treatment
- Retinal laser
- Intravitreal injections
- Vitrectomy when indicated
How Nutrition Supports the Eyes
The Retina Has High Metabolic Demands
The retina is neural tissue.
It continuously converts light into electrical signals and transmits visual information to the brain.
This requires:
- Oxygen
- Glucose
- Healthy blood flow
- Intact cell membranes
- Antioxidant defence
- Efficient removal of metabolic waste
The retina is particularly vulnerable to:
- Diabetes
- Smoking
- Vascular disease
- Inflammation
- Oxidative stress
- Age-related degeneration
A diet that supports cardiovascular and metabolic health can therefore support the retinal environment.
The Macula Contains Protective Pigment
The macula provides detailed central vision.
Lutein and zeaxanthin accumulate within the macular pigment.
They are obtained from diet because the human body cannot manufacture them from nothing.
They may contribute to:
- Light filtration
- Antioxidant protection
- Visual function
- Retinal-cell stability
The presence of a plausible biological mechanism does not mean that unlimited supplements provide unlimited benefit.
The Natural Lens Is Exposed to Oxidative Stress
The natural lens must remain transparent throughout life.
Its proteins are exposed to:
- Light
- Oxygen
- Metabolic stress
- Age-related chemical changes
Antioxidant nutrients participate in normal protective systems, but clinical trials have not demonstrated that taking high-dose antioxidant pills prevents age-related cataract in otherwise well-nourished adults.
The Eyes Depend on Healthy Blood Vessels
The retina and optic nerve are supplied by small blood vessels.
Poorly controlled:
- Diabetes
- Hypertension
- High cholesterol
- Smoking
- Kidney disease
may damage these vessels.
Healthy eating therefore protects vision partly through its effects on the entire cardiovascular system.
The Ocular Surface Needs Adequate Nutrition
The cornea and conjunctiva require:
- Vitamin A
- Protein
- Essential fatty acids
- Adequate hydration
- Normal tear production
Severe malnutrition and vitamin A deficiency can cause profound ocular-surface disease.
In most people with ordinary dry eye, however, the problem is more commonly related to:
- Meibomian-gland dysfunction
- Tear evaporation
- Inflammation
- Screen use
- Contact lenses
- Eyelid disease
- Hormonal or autoimmune factors
Simply drinking more water or taking a vitamin may not solve the underlying condition.
The Most Important Eye-Related Nutrients
Vitamin A
Vitamin A is required for the formation of visual pigments used by retinal photoreceptors.
It also supports healthy epithelial surfaces, including:
- Conjunctiva
- Cornea
- Tear-producing tissues
Food Sources of Vitamin A
Preformed vitamin A is found in animal foods such as:
- Liver
- Egg yolk
- Dairy products
- Some fish
Provitamin A carotenoids are found in:
- Carrots
- Pumpkin
- Sweet potato
- Dark green vegetables
- Red and orange fruit and vegetables
The body converts beta-carotene into vitamin A according to need.
What Happens in Vitamin A Deficiency?
Possible ocular features include:
- Poor dark adaptation
- Night blindness
- Conjunctival dryness
- Bitot spots
- Corneal dryness
- Corneal ulceration
- Scarring
- Blindness
Vitamin A deficiency requires medical diagnosis and treatment.
Taking random high doses without evidence of deficiency is inappropriate.
Can Too Much Vitamin A Be Harmful?
Yes.
Excess preformed vitamin A may cause:
- Liver injury
- Headache
- Bone problems
- Skin changes
- Birth defects during pregnancy
Pregnant women should not begin high-dose vitamin A supplements without medical advice.
Beta-carotene from food is generally different from high-dose beta-carotene supplements.
Smokers, former smokers and people exposed to asbestos should avoid high-dose beta-carotene supplements because of the increased lung-cancer risk demonstrated in clinical trials.
Lutein and Zeaxanthin
Lutein and zeaxanthin are yellow-orange carotenoid pigments.
They are concentrated in the macula and give macular pigment its colour.
Food Sources
Good sources include:
- Kale
- Spinach
- Kai lan
- Chye sim
- Broccoli
- Peas
- Sweetcorn
- Courgette
- Egg yolk
Dark green vegetables may contain large quantities even though chlorophyll masks the yellow pigment.
Are Eggs Useful?
Egg yolk contains less lutein by weight than many leafy vegetables, but its fat content may improve carotenoid absorption.
Eggs can therefore be part of a varied diet, provided they fit the person’s overall health and dietary plan.
Does Cooking Destroy Lutein?
Some loss may occur with prolonged heat, but cooking can also soften plant structures and improve the availability of carotenoids.
Practical methods include:
- Light steaming
- Stir-frying
- Blanching
- Adding a small amount of healthy fat
There is no need to eat every vegetable raw.
Do Lutein Tablets Prevent AMD?
Not in everyone.
Within AREDS2, lutein and zeaxanthin were used as part of a specific high-dose formula for people with intermediate or selected advanced AMD.
This should not be generalised to healthy young adults without AMD.
Vitamin C
Vitamin C is a water-soluble antioxidant.
It is found in:
- Guava
- Oranges
- Kiwi fruit
- Papaya
- Berries
- Peppers
- Tomatoes
- Broccoli
- Leafy vegetables
The aqueous humour surrounding the natural lens contains vitamin C.
A diet containing fruit and vegetables provides vitamin C together with fibre and other beneficial compounds.
High-dose vitamin C supplements have not been shown to prevent cataract in randomised trials.
Vitamin E
Vitamin E is a fat-soluble antioxidant found in:
- Almonds
- Sunflower seeds
- Hazelnuts
- Peanuts
- Avocado
- Vegetable oils
- Wholegrains
Vitamin E participates in the protection of cell membranes.
However, long-term vitamin E supplementation did not reduce cataract incidence in large randomised trials involving men or women.
High-dose vitamin E may also interact with:
- Anticoagulants
- Antiplatelet medication
- Chemotherapy
- Other medicines
Zinc
Zinc is involved in:
- Enzyme function
- Antioxidant defence
- Retinal metabolism
- Transport of vitamin A
Food sources include:
- Meat
- Seafood
- Dairy products
- Beans
- Nuts
- Seeds
- Wholegrains
High-dose zinc is included in the AREDS2 formula.
This does not mean that everyone should take 80 mg of zinc each day.
Excessive zinc can cause:
- Nausea
- Copper deficiency
- Anaemia
- Neurological problems
- Medication interactions
Copper is included in AREDS2 partly to reduce the risk of zinc-induced copper deficiency.
Omega-3 Fatty Acids
Omega-3 fatty acids include:
- DHA
- EPA
- Alpha-linolenic acid
DHA is an important component of retinal-cell membranes.
Food Sources
DHA and EPA are found mainly in:
- Salmon
- Sardines
- Mackerel
- Herring
- Trout
- Tuna
- Other seafood
Plant sources such as:
- Flaxseed
- Chia seed
- Walnuts
- Soy
contain alpha-linolenic acid, which the body converts to DHA and EPA only to a limited degree.
Omega-3 and AMD
Observational studies associate higher fish or dietary omega-3 intake with a lower risk of AMD.
However, adding omega-3 supplements to the AREDS formulation did not improve AMD outcomes in the AREDS2 trial.
Omega-3 and Dry Eye
Omega-3 capsules are widely marketed for dry eye.
The DREAM trial found that high-dose omega-3 supplementation was not superior to placebo for moderate-to-severe dry-eye disease.
Continuing omega-3 during the DREAM extension also did not produce better outcomes than withdrawal, and a separate large prevention trial found no reduction in new dry-eye disease.
This does not mean that fish is unhealthy.
It means that fish-oil capsules should not be presented as a universal dry-eye treatment.
Copper
Copper contributes to:
- Enzyme function
- Connective-tissue health
- Iron metabolism
- Antioxidant systems
Dietary sources include:
- Seafood
- Nuts
- Seeds
- Wholegrains
- Legumes
Copper supplementation is generally unnecessary without a specific indication.
In AREDS2 it is included to counter the risk of copper deficiency from high-dose zinc.
Folate and B Vitamins
Folate and other B vitamins contribute to:
- Red-blood-cell production
- Nerve function
- Homocysteine metabolism
- General vascular health
Sources include:
- Leafy vegetables
- Beans
- Lentils
- Wholegrains
- Eggs
- Meat
- Dairy products
There is no established B-vitamin combination that prevents every retinal or optic-nerve disease.
Deficiencies should be diagnosed and treated appropriately.
Anthocyanins and Polyphenols
Anthocyanins are pigments found in:
- Blueberries
- Blackberries
- Blackcurrants
- Purple grapes
- Red cabbage
- Purple sweet potato
Polyphenols are present in:
- Fruit
- Vegetables
- Tea
- Coffee
- Cocoa
- Olive oil
- Herbs and spices
These compounds have antioxidant and anti-inflammatory effects in laboratory research.
However, evidence that one berry, tea or extract prevents human eye disease remains limited.
Food sources are preferable to expensive concentrated products making unsupported claims.
The Best Overall Eating Pattern
A Mediterranean-Style Diet
A Mediterranean-style diet generally emphasises:
- Vegetables
- Fruit
- Legumes
- Wholegrains
- Nuts and seeds
- Fish
- Olive or other unsaturated oils
- Limited processed meat
- Limited refined carbohydrates
- Limited highly processed foods
It is a pattern rather than one prescribed menu.
Systematic reviews associate greater Mediterranean-diet adherence with lower AMD risk and possibly lower diabetic-retinopathy risk. Evidence for cataract, glaucoma and dry eye is less conclusive.
Does It Have to Contain Mediterranean Foods?
No.
The principles can be adapted to Asian and Singapore diets.
For example:
- Brown rice instead of white bread
- Tofu or tempeh instead of some meat meals
- Chye sim or kai lan instead of kale
- Sardines or local fish instead of salmon
- Peanuts or sesame instead of imported nuts
- Fresh fruit instead of sweetened desserts
- Canola, peanut or olive oil in moderate quantities instead of repeatedly heated saturated fat
The aim is not to reproduce a European menu exactly.
Singapore’s My Healthy Plate
The Health Promotion Board’s My Healthy Plate provides a practical structure:
- Half the plate with fruit and vegetables
- One quarter with wholegrains
- One quarter with protein
Protein choices may include:
- Fish
- Chicken
- Eggs
- Tofu
- Tempeh
- Beans
- Lentils
- Nuts
This approach supports eye health by improving overall nutrient variety and metabolic health.
Why Dietary Patterns Matter More Than Individual Nutrients
People do not eat isolated molecules.
A meal contains combinations of:
- Vitamins
- Minerals
- Protein
- Fibre
- Fats
- Carbohydrates
- Plant compounds
A diet high in vegetables may also be associated with:
- Less smoking
- More exercise
- Healthier weight
- Better medical care
- Lower intake of refined food
Observational nutrition research can therefore show associations without proving that one nutrient alone caused the outcome.
Foods to Eat Regularly
Dark Green Leafy Vegetables
Examples include:
- Spinach
- Chye sim
- Kai lan
- Kale
- Bok choy
- Broccoli leaves
- Watercress
They provide combinations of:
- Lutein
- Zeaxanthin
- Folate
- Vitamin C
- Vitamin K
- Fibre
- Plant antioxidants
Aim for variety rather than eating only one type.
Colourful Vegetables
Useful choices include:
- Carrots
- Pumpkin
- Tomatoes
- Red peppers
- Yellow peppers
- Sweet potato
- Aubergine
- Purple cabbage
- Sweetcorn
Different colours generally represent different plant pigments.
Eating a range of colours increases nutrient diversity.
Fruit
Useful options include:
- Guava
- Papaya
- Oranges
- Kiwi fruit
- Berries
- Apples
- Pears
- Dragon fruit
- Watermelon
Whole fruit is usually preferable to fruit juice because it contains more fibre and produces greater fullness.
People with diabetes should discuss portion size and carbohydrate distribution with their healthcare team rather than avoiding all fruit automatically.
Oily Fish
Consider fish such as:
- Salmon
- Sardines
- Mackerel
- Trout
- Herring
Fish does not need to be fried to provide nutritional benefit.
Options include:
- Grilling
- Steaming
- Baking
- Soup
- Light stir-frying
Eggs
Eggs provide:
- Protein
- Lutein
- Zeaxanthin
- Vitamin A
- Other nutrients
They can be included within a balanced diet.
People with specific cardiovascular or lipid conditions should follow personalised dietary advice.
Nuts and Seeds
Examples include:
- Almonds
- Walnuts
- Peanuts
- Cashews
- Pumpkin seeds
- Sunflower seeds
- Chia seeds
- Flaxseed
They provide:
- Unsaturated fats
- Vitamin E
- Zinc
- Protein
- Fibre
Choose unsalted or lightly salted varieties and be mindful of portion size because nuts are energy-dense.
Legumes
Examples include:
- Lentils
- Chickpeas
- Kidney beans
- Black beans
- Soybeans
- Tofu
- Tempeh
They provide:
- Protein
- Fibre
- Zinc
- Folate
- Slow-digesting carbohydrate
Legumes can replace some processed or fatty meats.
Wholegrains
Examples include:
- Brown rice
- Oats
- Barley
- Wholemeal bread
- Wholegrain noodles
- Quinoa
Wholegrains support:
- Fibre intake
- Blood-glucose control
- Cardiovascular health
- Healthy weight management
This is particularly relevant to diabetic-retinopathy prevention because retinal health is closely linked to long-term metabolic control.
Healthy Fats
Prefer unsaturated fats from:
- Fish
- Nuts
- Seeds
- Avocado
- Olive oil
- Canola oil
- Peanut oil
Limit frequent intake of:
- Trans fats
- Deep-fried food
- Highly processed snacks
- Fatty processed meats
- Excessive saturated fat
A 2024 meta-analysis associated higher dietary long-chain omega-3 intake with lower AMD risk and higher trans-fat intake with a greater risk of advanced AMD, although these findings were observational.
Foods and Habits to Limit
Sugary Drinks
Frequent sugary drinks can contribute to:
- Weight gain
- Poor glucose control
- Diabetes
- Dental disease
For people with diabetes, repeated glucose spikes may complicate long-term control.
Choose:
- Water
- Unsweetened tea
- Unsweetened coffee in moderation
- Lower-sugar alternatives
Highly Refined Carbohydrates
Examples include:
- Sugary pastries
- Sweet biscuits
- Refined cereal
- Large portions of white bread
- Large portions of white rice without vegetables or protein
These foods are not forbidden, but the overall pattern and portion matter.
Combine carbohydrates with:
- Vegetables
- Protein
- Fibre
- Healthy fats
to improve meal balance.
Excessive Salt
High sodium intake may worsen blood pressure in susceptible individuals.
Hypertension can affect the retinal and optic-nerve circulation.
Reduce reliance on:
- Salty sauces
- Processed meats
- Instant noodles
- Preserved food
- Heavily salted soup
- Repeatedly adding soy sauce
One systematic review of diet and diabetic retinopathy identified possible concern regarding high sodium intake and diabetic macular-oedema progression, although evidence was limited.
Processed Meat
Examples include:
- Sausages
- Luncheon meat
- Bacon
- Salami
- Processed nuggets
These foods are often high in:
- Salt
- Saturated fat
- Preservatives
- Calories
They should not be the main protein source.
Deep-Fried Food
Occasional fried food can fit within an otherwise balanced diet.
Frequent intake may displace:
- Vegetables
- Fish
- Legumes
- Wholegrains
and increase overall calorie and unhealthy-fat intake.
Alcohol
Alcohol does not improve eye health.
Excessive intake may contribute to:
- Nutritional deficiencies
- Liver disease
- Neurological damage
- Poor diabetes control
- Injury
- Medication interactions
Severe alcohol misuse combined with poor nutrition may contribute to optic neuropathy.
Nutrition and Age-Related Macular Degeneration
What Is AMD?
Age-related macular degeneration affects the macula and may cause:
- Central distortion
- Difficulty reading
- Reduced facial recognition
- A dark central patch
- Loss of fine detail
AMD is influenced by:
- Age
- Genetics
- Smoking
- Cardiovascular health
- Diet
- Other biological factors
Mediterranean Diet and AMD
Higher adherence to a Mediterranean-style diet has been associated with:
- Lower AMD incidence
- Lower risk of late AMD
- Slower progression in selected cohorts
A 2024 meta-analysis found a lower AMD risk among those with medium-to-high adherence.
This does not mean that olive oil or one particular vegetable prevents AMD.
The observed effect may reflect the combined pattern of:
- Fish
- Vegetables
- Fruit
- Legumes
- Wholegrains
- Healthy fats
- Lower processed-food intake
Lutein, Zeaxanthin and the Macula
Dietary lutein and zeaxanthin are biologically relevant because they accumulate in the macula.
People with low dietary intake appeared to gain greater benefit from lutein and zeaxanthin within AREDS2.
This supports eating leafy vegetables but does not establish that everyone needs high-dose carotenoid supplements.
Fish and AMD
Observational studies associate eating fish—often around twice weekly or more—with lower AMD risk.
However, fish-oil capsules did not improve the AREDS2 supplement.
A food pattern and an isolated supplement are not interchangeable.
AREDS2 Supplements
Who May Benefit?
AREDS2 is intended mainly for people with:
- Intermediate AMD in one or both eyes
- Late AMD in one eye with the other eye at risk
It may slow progression to late AMD and help preserve central vision for longer.
Who Does Not Generally Benefit?
AREDS2 has not shown the same benefit for:
- People without AMD
- People with early AMD only
- People seeking general eye-health insurance
- Cataract prevention
- Myopia control
- Glaucoma prevention
What Is in the AREDS2 Formula?
The studied formula contains:
- Vitamin C: 500 mg
- Vitamin E: 400 IU
- Zinc: 80 mg
- Copper: 2 mg
- Lutein: 10 mg
- Zeaxanthin: 2 mg
Commercial formulations should be checked carefully because products labelled “eye health” may not contain the studied doses.
Why Is Beta-Carotene Excluded?
The original AREDS formula contained beta-carotene.
Long-term AREDS2 follow-up found a higher lung-cancer risk among participants assigned beta-carotene, especially relevant to current and former smokers.
Lutein and zeaxanthin are therefore preferred in AREDS2.
Does AREDS2 Replace a Healthy Diet?
No.
AREDS2 is a targeted medical supplement.
It does not provide:
- Fibre
- Protein
- Healthy fats
- Overall dietary variety
- Blood-pressure control
- Diabetes management
Nutrition and Cataract
Can a Cataract Be Dissolved with Food?
No.
A cataract consists of structural and chemical changes within the natural lens.
Once a visually significant cataract has formed, diet cannot make the cloudy lens clear again.
The definitive treatment is cataract surgery when symptoms justify it.
Can Diet Reduce Cataract Risk?
A balanced diet may support general lens health.
Observational research associates greater lutein and zeaxanthin intake with a lower risk of nuclear cataract.
However, observational findings are not the same as proven prevention.
Why Do Antioxidant Trials Matter?
Large randomised studies found no meaningful cataract prevention from high-dose:
- Vitamin C
- Vitamin E
- Beta-carotene
- AREDS antioxidants
This suggests that taking isolated antioxidant supplements is not equivalent to eating a healthy diet over many years.
More Important Modifiable Factors
Cataract risk can also be influenced by:
- Smoking
- Diabetes
- Steroid exposure
- Ultraviolet radiation
- Eye injury
Nutrition should form part of a broader prevention strategy.
Nutrition and Diabetic Retinopathy
Why Diabetes Affects the Eyes
High blood glucose can damage retinal blood vessels over time.
Diabetic retinopathy may cause:
- Leakage
- Retinal haemorrhage
- Macular oedema
- Abnormal new vessels
- Vitreous haemorrhage
- Retinal detachment
The Main Nutritional Objective
The most important dietary role is to support stable long-term management of:
- Blood glucose
- Blood pressure
- Cholesterol
- Weight
- Kidney health
This is more important than taking a supplement advertised for the retina.
Dietary Patterns and Retinopathy
A systematic review found generally protective associations with:
- Fruit
- Vegetables
- Fibre
- Fish
- Mediterranean dietary patterns
- Oleic acid
The authors emphasised that stronger prospective evidence is still needed.
A more recent meta-analysis also associated greater Mediterranean-diet adherence with a lower risk of diabetic microvascular complications, including retinopathy.
Fish and Diabetic Retinopathy
Within the PREDIMED cohort, higher dietary marine omega-3 intake was associated with a lower incidence of sight-threatening diabetic retinopathy in older adults with type 2 diabetes.
This remained an observational analysis within a dietary trial rather than proof that fish-oil capsules prevent retinopathy.
Does Avoiding All Carbohydrates Protect the Retina?
Not necessarily.
People with diabetes require a sustainable eating plan rather than an extreme unsupervised diet.
Useful strategies may include:
- Smaller refined-carbohydrate portions
- More wholegrains
- More fibre
- Vegetables with meals
- Adequate protein
- Avoiding sugary drinks
- Regular meal timing when medically appropriate
Medication may require adjustment when carbohydrate intake changes substantially.
Rapid Changes in Glucose Control
Patients with significant diabetic retinopathy should coordinate major diabetes-treatment changes with their medical team.
Improving long-term glucose control remains beneficial, but retinal follow-up must not be neglected.
Retinal Screening Remains Essential
Good nutrition cannot identify retinopathy.
Many patients have no symptoms until disease becomes advanced.
Attend the recommended:
- Retinal photography
- Dilated examination
- OCT
- Specialist review
even when glucose control appears good.
Nutrition and Dry Eye
Can Diet Cure Dry Eye?
Usually not on its own.
Dry-eye disease may involve:
- Meibomian-gland dysfunction
- Tear deficiency
- Inflammation
- Allergy
- Contact lenses
- Eyelid disease
- Autoimmune conditions
- Medication effects
Omega-3 Supplements
Although omega-3 has a plausible anti-inflammatory role, large randomised trials did not show a meaningful universal benefit for dry-eye symptoms or signs.
Fish can remain part of a healthy diet, but patients should not feel compelled to purchase expensive fish-oil capsules as a substitute for:
- Warm compresses
- Eyelid hygiene
- Lubricants
- Allergy treatment
- Anti-inflammatory eye drops
- Meibomian-gland treatment
- Environmental changes
Hydration
Dehydration may contribute to general dryness.
Drinking an appropriate amount of fluid is sensible.
However, drinking excessive water does not directly correct:
- Blocked meibomian glands
- Eyelid inflammation
- Autoimmune tear deficiency
- Contact-lens intolerance
Nutrition and Glaucoma
Is There a Glaucoma Diet?
No food or supplement has been shown to replace:
- Pressure-lowering drops
- Selective laser trabeculoplasty
- Glaucoma surgery
- Regular visual fields
- OCT monitoring
Research into diet and glaucoma remains inconsistent, and systematic reviews have not identified one reliably protective nutrient.
General Vascular Health Still Matters
A balanced diet may support:
- Blood-pressure control
- Diabetes prevention
- Cardiovascular health
- Healthy weight
These are worthwhile for overall health but should not be presented as proven optic-nerve regeneration.
Can Antioxidants Restore a Damaged Optic Nerve?
No.
Glaucoma causes irreversible loss of retinal ganglion cells and optic-nerve fibres.
Supplements cannot restore established field loss.
Nutrition and Childhood Myopia
Can Food Prevent Myopia?
No specific food, vitamin or supplement has been shown to prevent axial elongation reliably.
Myopia is influenced by:
- Genetics
- Age
- Outdoor exposure
- Near-work behaviour
- Education
- Individual eye-growth biology
Do Carrots Reverse Myopia?
No.
Myopia usually occurs because the eye has become too long.
Vitamin A does not shorten the eye.
What Actually Helps?
Evidence-supported approaches include:
- Regular outdoor time to reduce myopia-onset risk
- Myopia-control spectacle lenses
- Low-concentration atropine
- Dual-focus contact lenses
- Orthokeratology
- Selected combination treatment
Healthy eating remains important for the child’s overall development but is not a replacement for myopia control.
Nutrition for Children’s Eyes
A Balanced Childhood Diet
Children should receive a varied diet containing:
- Vegetables
- Fruit
- Wholegrains
- Protein
- Healthy fats
- Calcium-containing foods where appropriate
Useful eye-related foods include:
- Eggs
- Leafy vegetables
- Orange vegetables
- Fish
- Tofu
- Beans
- Fruit
- Nuts and seeds when age-appropriate and safe
Do Children Need Eye Gummies?
Usually not when they:
- Eat a varied diet
- Grow normally
- Have no malabsorption
- Have no documented deficiency
Gummies may contain:
- Sugar
- Excess vitamins
- Incomplete nutrient combinations
- Doses inappropriate for the child
Supplements should be kept out of reach because children may mistake them for sweets.
Picky Eaters
Parents can improve variety by:
- Repeatedly offering foods without force
- Combining familiar and unfamiliar foods
- Adding vegetables to soups or omelettes
- Using different textures
- Allowing the child to help choose and prepare food
- Serving fruit as a routine snack
A child with extremely restricted eating, poor growth or suspected deficiency should be assessed medically.
Vegetarian and Vegan Diets
A well-planned vegetarian diet can support eye health.
Attention may be required for:
- Vitamin B12
- Iron
- Zinc
- Protein
- Iodine
- Vitamin D
- Omega-3 fatty acids
Vegans do not obtain preformed DHA and EPA from fish, although algae-derived sources are available.
Supplementation should be based on dietary assessment and medical advice.
Older Adults and Nutrition
Older adults may be at nutritional risk because of:
- Reduced appetite
- Dental problems
- Medication
- Social isolation
- Difficulty shopping
- Reduced mobility
- Chronic disease
- Impaired absorption
A simple, adequate eating plan may be more useful than chasing idealised superfoods.
Priorities include:
- Sufficient protein
- Regular vegetables
- Fruit
- Wholegrains
- Fish or another healthy protein
- Appropriate calorie intake
- Adequate hydration
When Eye Supplements May Be Appropriate
Intermediate AMD
This is the clearest eye-specific indication for a high-dose nutritional formula.
The ophthalmologist should confirm:
- AMD stage
- Which eye is affected
- Whether AREDS2 is appropriate
- Medication interactions
- Smoking history
Documented Deficiency
Examples include:
- Vitamin A deficiency
- Vitamin B12 deficiency
- Zinc deficiency
- Malabsorption-related deficiencies
Treatment should address both:
- The deficiency
- Its underlying cause
Restricted Diet or Malabsorption
Supplementation may be needed after:
- Bariatric surgery
- Inflammatory bowel disease
- Pancreatic disease
- Severe food restriction
- Other malabsorptive conditions
Pregnancy
Pregnant women should use prenatal supplements recommended by their healthcare team.
They should avoid unprescribed high-dose vitamin A because excess preformed vitamin A can be harmful to the developing baby.
When Supplements Are Usually Not Helpful
Routine supplements have not been shown to:
- Prevent all cataracts
- Prevent AMD in healthy people
- Reverse glaucoma
- Cure dry eye
- Stop myopia
- Treat floaters
- Reverse diabetic retinopathy
- Improve normal vision beyond its biological limit
Supplement Safety
More Is Not Better
Fat-soluble vitamins can accumulate within the body.
These include:
- Vitamin A
- Vitamin D
- Vitamin E
- Vitamin K
Excess intake may cause toxicity.
Interactions with Medication
Supplements may interact with:
- Warfarin
- Antiplatelet medication
- Cancer treatment
- Cholesterol medication
- Blood-pressure medication
- Diabetes medication
Tell your doctors about all supplements, including herbal products.
Multiple Products May Duplicate Ingredients
A person may unknowingly take:
- A multivitamin
- An eye-health supplement
- A skin supplement
- A separate zinc tablet
- A separate vitamin E capsule
This can create a much higher combined dose than intended.
Quality and Labelling
The words:
- Natural
- Antioxidant
- Eye health
- Retina support
- Clinically inspired
do not prove that a product has been tested in a meaningful trial.
Check:
- Exact ingredients
- Exact doses
- Manufacturer
- Expiry date
- Medical indication
- Possible interactions
Common Nutrition Myths
“Carrots Give You Perfect Night Vision”
False.
Carrots provide beta-carotene, but extra carrots do not enhance vision beyond normal when vitamin A status is already adequate.
“Bilberry Improves Night Vision”
Reliable evidence supporting bilberry supplements for normal night vision is limited.
Historical stories and small laboratory studies do not prove a clinically meaningful effect.
“Lutein Prevents Every Eye Disease”
False.
Lutein has a specific biological role and forms part of AREDS2, but it does not prevent:
- Retinal detachment
- Glaucoma
- Myopia
- Corneal infection
- Every cataract
“Fish-Oil Capsules Cure Dry Eye”
Not proven.
The DREAM trial found no significant advantage over placebo.
“Fish-Oil Capsules Prevent AMD”
Not established.
Dietary fish intake is associated with lower AMD risk, but omega-3 supplementation did not improve AREDS2 outcomes.
“AREDS2 Is a Multivitamin for Everyone Over 50”
False.
It is intended for specific AMD stages.
“AREDS2 Prevents Cataract”
False.
AREDS and AREDS2 did not prevent cataract.
“A Healthy Diet Can Reverse a Cataract”
False.
Cataract surgery is the definitive treatment for a visually significant cataract.
“A Detox Diet Cleans the Retina”
False.
The liver and kidneys manage normal waste processing.
There is no proven juice cleanse that removes retinal disease.
“Sugar Directly Causes Every Eye Problem”
False.
Sugar is not the cause of every eye condition.
However, chronically poor glucose control can damage retinal blood vessels in diabetes.
“People with Diabetes Cannot Eat Fruit”
False.
Fruit contains carbohydrate, but whole fruit can usually fit within an individualised diabetes plan.
Portion, total carbohydrate and timing matter.
“Expensive Imported Berries Are Essential”
False.
Local and affordable foods can provide excellent nutrition.
Guava, papaya, leafy vegetables, eggs, tofu and sardines may be highly nutritious.
“Fresh Vegetables Are Always Better Than Frozen”
False.
Frozen vegetables can retain substantial nutritional value and may be practical.
Choose versions without excessive salt or sauce.
“Raw Vegetables Are Always More Nutritious”
False.
Cooking may reduce certain heat-sensitive vitamins but improve the availability of other nutrients.
A mixture of raw and cooked food is reasonable.
“Supplements Are Safe Because They Are Natural”
False.
Natural products can cause toxicity and medication interactions.
“If One Capsule Is Good, Two Are Better”
False.
High doses can be harmful.
“Eating Well Means Eye Examinations Are Unnecessary”
False.
Nutrition cannot detect silent:
- Glaucoma
- Diabetic retinopathy
- Retinal tears
- Macular degeneration
Frequently Asked Questions
How Many Vegetables Should I Eat?
Rather than counting one specific eye vegetable, aim to make fruit and vegetables approximately half of a balanced plate, following Singapore’s My Healthy Plate approach.
Is Spinach Better Than Kale?
Both are nutritious.
Choose the one you enjoy and can eat regularly.
Other green vegetables such as chye sim and kai lan are also useful.
Is Sweetcorn Good for the Eyes?
Sweetcorn contains lutein and zeaxanthin.
It also contains carbohydrate, so portion size may matter for people managing diabetes.
Are Egg Yolks Bad for the Eyes?
No.
Egg yolks contain lutein and zeaxanthin.
The decision about egg frequency should consider the person’s overall diet and medical history.
Should I Eat Fish Every Day?
Not necessarily.
Regular fish intake can form part of a balanced diet, but dietary variety remains important.
People who are pregnant, immunocompromised or concerned about mercury should follow local medical and food-safety advice.
Is Salmon Better Than Sardines?
Both provide omega-3 fatty acids and protein.
Sardines may be:
- Less expensive
- Lower on the food chain
- A source of calcium when the bones are eaten
Preparation method and sodium content matter.
Is Canned Fish Healthy?
It can be.
Choose products with:
- Lower sodium
- Less heavy sauce
- Appropriate oil content
Drain excess oil or brine when needed.
Does Olive Oil Protect the Eyes?
Olive oil is part of the Mediterranean dietary pattern and provides unsaturated fats and plant compounds.
It should not be treated as a medication or consumed in unlimited amounts.
Are Nuts Good for AMD?
Nuts form part of several healthy dietary patterns.
They provide unsaturated fats, vitamin E, minerals and fibre.
No particular nut guarantees AMD prevention.
Is Dark Chocolate Good for Vision?
Dark chocolate contains flavonoids, but evidence for meaningful long-term eye protection is insufficient.
It may also contain substantial calories, sugar and saturated fat.
Does Coffee Protect the Eyes?
Observational studies have investigated coffee and different eye diseases, with inconsistent results.
Coffee should not be used as eye treatment.
Does Green Tea Protect the Retina?
Tea contains polyphenols, but there is insufficient evidence to prescribe it for prevention or treatment of retinal disease.
Unsweetened tea can nevertheless be part of a healthy diet.
Is Turmeric Good for the Eyes?
Curcumin has laboratory anti-inflammatory effects.
Clinical evidence is insufficient to recommend turmeric supplements as treatment for eye disease.
Concentrated supplements may interact with medication.
Should I Take a Multivitamin?
A multivitamin may be appropriate for selected nutritional gaps, but it does not reproduce the AREDS2 formula and has not been shown to prevent every eye condition.
Can I Take AREDS2 with a Multivitamin?
Some people do, but the combined ingredients should be reviewed to avoid excessive dosing.
NEI advises discussing the full medication and supplement list with a healthcare professional.
Can I Take AREDS2 If I Have No AMD?
It is generally not indicated for AMD prevention in people without AMD.
Can I Take AREDS2 for Early AMD?
AREDS2 has not shown the same benefit for early AMD.
Regular monitoring and healthy lifestyle measures remain important.
Can Smokers Take AREDS2?
The current AREDS2 formulation uses lutein and zeaxanthin rather than beta-carotene and is preferred for current and former smokers.
Check the label carefully to ensure beta-carotene is absent.
Do Eye Vitamins Improve Floaters?
No.
Ordinary vitreous floaters do not resolve through vitamin supplementation.
A sudden increase in floaters requires retinal assessment.
Can Vitamins Restore Optic-Nerve Damage?
Not in established glaucoma.
Deficiency-related optic neuropathy is different and requires diagnosis and treatment.
Can Food Improve Colour Vision?
Congenital colour-vision deficiency is caused by inherited differences in cone photopigments.
Diet does not change the underlying condition.
Can Nutrition Improve Vision After Retinal Surgery?
Adequate nutrition supports general healing, but it cannot determine the anatomical result.
Follow the retinal surgeon’s postoperative advice.
Can Food Reduce Eye Pressure?
No specific food reliably lowers intraocular pressure enough to treat glaucoma.
Does Drinking More Water Help Glaucoma?
Normal hydration is appropriate.
Rapidly drinking a very large volume of water can temporarily affect eye pressure and should not be used as a treatment.
Does a Low-Carbohydrate Diet Prevent Diabetic Retinopathy?
No single macronutrient ratio suits every patient.
The goal is safe, sustainable glucose and cardiovascular-risk management.
Should People with AMD Avoid Blueberries Because of Sugar?
Whole berries can generally form part of a balanced diet.
People with diabetes should consider portion and total carbohydrate.
Can I Get Enough Lutein from Food?
Many people can obtain meaningful lutein and zeaxanthin from:
- Leafy vegetables
- Peas
- Sweetcorn
- Eggs
- Other colourful produce
The high-dose AREDS2 formula is different and is intended for selected AMD patients.
Practical Meal Ideas
Breakfast
Possible options include:
- Oats with fruit, nuts and unsweetened yoghurt
- Wholemeal toast with egg and tomato
- Vegetable omelette with wholegrain bread
- Unsweetened yoghurt with berries and seeds
- Tofu, vegetables and a modest wholegrain portion
Lunch
Possible choices include:
- Mixed vegetable rice with two vegetable dishes, fish or tofu and brown rice
- Yong tau foo with leafy vegetables, tofu and less processed items
- Fish soup with added vegetables and a moderate rice portion
- Wholegrain sandwich with egg, tuna or chicken and salad
- Lentil or bean soup with wholemeal bread
At hawker centres, HealthHub suggests building a balanced meal around vegetables, protein and a wholegrain staple where available.
Dinner
Possible options include:
- Steamed fish, brown rice and stir-fried leafy vegetables
- Tofu and vegetable stir-fry with wholegrain noodles
- Grilled chicken with salad and sweet potato
- Lentil curry with vegetables and wholegrain chapati
- Sardines, tomato and vegetables with a modest rice portion
Snacks
Options include:
- Whole fruit
- Unsalted nuts
- Plain yoghurt
- Carrot or cucumber sticks
- Edamame
- Wholegrain crackers with hummus
A Simple Weekly Shopping List
Vegetables
- Two or more leafy green varieties
- One orange or yellow vegetable
- One red vegetable
- One cruciferous vegetable
- Frozen vegetables for convenience
Fruit
- Citrus fruit
- Berries or grapes
- One vitamin-C-rich local fruit
- Convenient fruit for snacks
Protein
- Fish
- Eggs
- Tofu or tempeh
- Beans or lentils
- Lean poultry or meat
Wholegrains
- Brown rice
- Oats
- Wholemeal bread
- Wholegrain noodles
Healthy Fats
- Nuts
- Seeds
- Olive, canola or another unsaturated cooking oil
When to Seek Medical Assessment
Nutrition advice should not delay examination for:
- Sudden loss of vision
- New distortion
- A central dark patch
- Flashes
- A sudden shower of floaters
- A curtain or shadow
- Eye pain
- A red, light-sensitive eye
- Sudden double vision
- New night blindness
- Rapidly worsening vision
- Unexplained weight loss or malnutrition symptoms
New night blindness may indicate:
- Vitamin A deficiency
- Retinal dystrophy
- Cataract
- Glaucoma
- Retinal disease
- Another medical condition
Do not self-treat it with high-dose vitamin A without investigation.
An Eye-Healthy Nutrition Checklist
Daily Habits
- Eat vegetables at more than one meal.
- Include dark green vegetables regularly.
- Choose a variety of fruit and vegetable colours.
- Use wholegrains where practical.
- Include a healthy protein source.
- Limit sugary drinks.
- Avoid making processed meat the main protein.
- Use unsaturated fats in moderate quantities.
- Drink appropriate fluids.
- Avoid smoking.
Weekly Habits
- Include fish regularly when suitable.
- Include beans, lentils, tofu or tempeh.
- Eat nuts or seeds in appropriate portions.
- Vary vegetable and fruit choices.
- Plan meals before relying on convenience food.
Before Taking a Supplement
- What condition am I trying to treat?
- Do I have a proven deficiency?
- Do I have intermediate AMD?
- Does the product contain beta-carotene?
- Am I a smoker or former smoker?
- Does it duplicate my multivitamin?
- Could it interact with my medication?
- Is the dose supported by a clinical trial?
- Has my doctor reviewed the product?
Questions to Ask the Ophthalmologist
- Do I have AMD?
- What stage is it?
- Would AREDS2 benefit me?
- Does the supplement contain the correct ingredients?
- Should I avoid beta-carotene?
- Is my vision problem related to nutritional deficiency?
- Do I need blood tests?
- Could my diet affect my diabetes or blood pressure?
- Do I still need retinal screening?
- Which symptoms require urgent review?
The Bottom Line
Nutrition supports healthy eyes through several pathways.
A balanced diet provides:
- Vitamin A for retinal and ocular-surface function
- Lutein and zeaxanthin for macular pigment
- Vitamin C and vitamin E for normal antioxidant systems
- Zinc and copper for enzyme and tissue function
- Omega-3 fatty acids for cell membranes
- Fibre and unsaturated fats for metabolic and cardiovascular health
The most useful overall pattern emphasises:
- Dark green leafy vegetables
- Colourful fruit and vegetables
- Fish
- Eggs
- Nuts and seeds
- Legumes
- Wholegrains
- Healthy unsaturated fats
A Mediterranean-style dietary pattern is associated with lower AMD risk and may also support lower diabetic-retinopathy risk, although much of the eye-specific evidence is observational.
Food should be the foundation.
Supplements have a narrower role.
AREDS2 can reduce progression from intermediate to advanced AMD by approximately 25%, but:
- It does not prevent AMD from developing.
- It is not routinely indicated for early AMD.
- It does not prevent cataract.
- It is not a general multivitamin.
- It should not contain beta-carotene for current or former smokers.
High-dose antioxidant supplements have not been shown to prevent age-related cataract in well-nourished adults.
Omega-3 supplements have not reliably prevented or treated dry-eye disease and did not improve the AREDS2 formula.
Nutrition also cannot:
- Reverse myopia
- Cure glaucoma
- Remove a cataract
- Restore damaged retinal cells
- Replace diabetic-retinopathy screening
- Replace prescribed eye treatment
The most important message is:
Eat a varied, balanced diet that supports your entire cardiovascular and metabolic health. Choose vegetables, fruit, fish, legumes, wholegrains and healthy fats regularly, and use high-dose eye supplements only when there is a clear medical reason.
References
- National Eye Institute. AREDS/AREDS2 Frequently Asked Questions.
- National Eye Institute. AREDS and AREDS2 clinical trials: major findings.
- National Eye Institute. AREDS2 supplements for age-related macular degeneration.
- Chew EY, et al. Long-term outcomes of adding lutein/zeaxanthin and omega-3 fatty acids to AREDS supplements: AREDS2 Report 28. JAMA Ophthalmology. 2022. PMID: 35653117.
- Angelia M, Amelia YS, Pratama KG. Mediterranean diet as a modifiable risk factor for age-related macular degeneration: a systematic review and meta-analysis. Tzu Chi Medical Journal. 2024. PMID: 38645781.
- Li J, et al. The Mediterranean diet and age-related eye diseases: a systematic review. Nutrients. 2023. PMID: 37432187.
- Ma L, et al. Dietary lutein and zeaxanthin intake and the risk of age-related cataract: a dose-response meta-analysis. Graefe’s Archive for Clinical and Experimental Ophthalmology. 2014. PMID: 24150707.
- Liu XH, et al. Lutein and zeaxanthin status and the risk of cataract: a meta-analysis. Nutrients. 2014. PMID: 24451312.
- Jiang H, et al. Dietary omega-3 polyunsaturated fatty acids, fish intake and the risk of age-related macular degeneration. Clinical Nutrition. 2021. PMID: 34749130.
- Chong EWT, et al. Dietary omega-3 fatty acid and fish intake in the primary prevention of age-related macular degeneration: a systematic review and meta-analysis. Archives of Ophthalmology. 2008. PMID: 18541848.
- Dry Eye Assessment and Management Study Research Group. Omega-3 supplementation for dry-eye disease and the DREAM extension study. PMID: 31425752.
- Christen WG, et al. Marine omega-3 supplementation and incidence of dry-eye disease in healthy adults. JAMA Ophthalmology. 2022. PMID: 35679030.
- McNeil JJ, et al. Vitamin E supplementation and cataract: a randomised controlled trial. Ophthalmology. 2004. PMID: 14711717.
- Christen WG, et al. Age-related cataract in a randomised trial of vitamins E and C in men. Archives of Ophthalmology. 2010. PMID: 21060040.
- Age-Related Eye Disease Study Research Group. High-dose vitamins C and E and beta-carotene for age-related cataract: AREDS Report No. 9. PMID: 11594943.
- Shah J, et al. Dietary intake and diabetic retinopathy: a systematic review of the literature. 2022. PMID: 36501054.
- Mediterranean diet and diabetic microvascular complications: a systematic review and meta-analysis. 2025. PMID: 40170125.
- Sala-Vila A, et al. Dietary marine omega-3 fatty acids and incident sight-threatening retinopathy in type 2 diabetes: PREDIMED. JAMA Ophthalmology. 2016. PMID: 27541690.
- National Institutes of Health Office of Dietary Supplements. Vitamin A and carotenoids fact sheet.
- Health Promotion Board and HealthHub Singapore. My Healthy Plate.
