Vitamins groups B are against glaucoma and cataract.

As in meal these vitamins are having together, they are taking part in metabolism process and energy forming, as positive affects on innervation, so as eye is a nerves filling, which impulse from retina transfers in brain, as failure these vitamins and vision affecting, but and vitamins groups B lowering negative affect a few amino acids on vessels eyes, improving blood circulation, as affect same on organism,as anti oxidants, as thanks to these you are less risk in cataract and glaucoma.
B1 VITAMIN thiamine is in failure are nerves impulse transferring is bad, in eye is vision weak, as nerve cells damaging as you are in glaucoma risk.
As he needs for the form a ferment,which lows intaocular pressure. As this vitamin having in kidney beans, arachis, rye, millet flour of hard grinding, buckwheat and oats cereals, Millet, beer yeasts, honey, daily his needing on 1.5 mg.
Riboflavin or B2  as forming anti bodies, erythrocytes, regulation growth for reproductive function, rising acidity processes in carbohydrate , protein and fat metabolism, as in cornea of retina, burns in organism carbohydrates, forming in energy, needing for eyes muscles, oxygen metabolism assisting as for vision supporting, as enters in a vision purpura, retina care against harmful substances of rays, as in lens he supports for reserve of glutatione, as antioxidant active, as riboflavin failure are bad vision in dark, braking for the small vessel eyes, as in deficit are cornea inflamations, retina damage, vision nerve, cataract, as this vitamin  cure  and prevents such diseases, as you can catch his in yeasts, leaves green vegetables, cereals, peas, seeds top, meat, liver, kidneys, cheese, milk, yogurt, curd, egg white, daily needing for adult is on 2 mg.
He frequently synthesizing by micro organisms as and bowel s micro flora of thick bowel, as bowel is an importance part of good vision.
B2  is nicotenic acid, vitamin PP, niacin, as energy producing, lows inflammation, prevents narrows vessels, as vasodilates small vessels and of brain, improves micro circulation, weak antioxidant effect, improves memory, coordination mobilities, therefore his with success curing vessels pathologies ,as lowering cholesterol, as vision nerve blood circulation improving.
Niacin rich are yeasts, liver, nuts as earth of, yolk, milk, fish, meat bird, veal, bean, buckwheat, seeds not cleaned, green vegetables. Nicotenic acid is very stable of these vitamins, thus in canning, warming of meal ,his keeping good, as warming milk not changing his containing.
Daily needing for adults are 15-19 mg.