Nutrition and vision

Vitamin A, Beta Carotene, is consumed by the eyes for night vision and by exposure to heat and glare, flickering fluorescent lights, computer monitors and TV.

Sources of vitamin A are found in orange and green vegetables.
If you take supplements it should be of the beta carotene type.

The nicotine in cigarettes as well as alcohol burn vitamin A.

Thiamin, vitamin B1 keeps the eye muscles working. Riboflavin, B2 keeps eyes at a correct light sensitivity level. Lack of vitamin B2 causes undue sensitivity to light, constant fatigue, burning eyes and inability to see at twilight hours.
B2 also appears to play a role in the circulation of nutrients to the lenses.
Lack of B2 shows up in cataract patients.
B6, Pyridoxine HCl, is important for emotional balance.
Below average B12, Cyanocobalamin, levels are apparent in individuals who suffer from cataracts and glaucoma.

Sources are dark green vegetables, brewer's yeast, eggs, meat, nuts and seeds.
If you take supplements make sure you get a balanced combination since they need each other to be absorbed in your body.

Also note that all B vitamins are consumed by stress

To be fully effective it must contain Ascorbic Acid and Bioflavinoids. Vitamin C is important for circulation within the eyes.

High concentration is found in healthy lenses, especially bioflavnoid rutin.

Sources of vitamin C are citrus fruits, melon, and tomatoes.

Note that smoking zaps vitamin C levels.

Nearsighted people have low levels of calcium within their eyes.

Several studies found that higher levels of calcium had a positive effect on near-sightedness (mypoia), detached retina, and glaucoma. It appears that calcium dehydrates the fluid within the eyes, thus making the eyeball shorter.

Sugar, found in carbonated drinks seems to be one of the major causes of near-sightedness (myopia), , where the eyeball becomes so water filled that it is stretched into the elongated myopic shape. The eyeballs shrink back to normal shape when calcium is present.

Sources of vitamin D are from sunlight. Also vitamin D is added to most milk.

Nearsighted people have low levels of calcium within their eyes.

Several studies found that higher levels of calcium had a positive effect on near-sightedness (mypoia), detached retina, and glaucoma. It appears that calcium dehydrates the fluid within the eyes, thus making the eyeball shorter.

Sugar, found in carbonated drinks seems to be one of the major causes of near-sightedness (myopia), , where the eyeball becomes so water filled that it is stretched into the elongated myopic shape. The eyeballs shrink back to normal shape when calcium is present.

Sources of vitamin D are from sunlight. Also vitamin D is added to most milk.

Sclera
(the white of the eye ball)

Calcium
Calcium Phosphate, Calcium Carbonate

Conjunctiva
(the covering of the sclera)

Vitamin B2, Riboflavin,
Vitamin B12, Cyanocobalamin ,
and folic acid.

Cornea

Vitamin A

Lens

Vitamin C, Ascorbic Acid,
Vitamin E, dl-Alpha Tocopheryl Acetate
Vitamin B2, Riboflavin.

Ciliary muscle

Chromium, Chromium Chloride

Retina

Vitamin A, Beta Carotene,
Zinc, Zinc Sulfate.
and other minerals

Macula
(the area around the fova)

Vitamin B complex
Xanthophylls, (Lutein/Zeaxanthein)

Macula degeneration

Selenium, Zinc, Taurene,
Vitamin E

Eye fatigue, Night-vision

Bilberry extract, Anthocyanosides

Circulation

Grape seed extract,
Proanthocyanidins

A number of leading supplement suppliers are now making a special "Extension Vision" product available as an addition to your normal multivitamin supplement. In general a well balanced diet is the best insurance you can get. However should you have a need to improve your levels of vitamins known to influence your vision problem then the above chart is a good guide.