Some points from this s upplementary article in Review of Optometry. Vitamin A: The blue Mountains Eye study found that elevated beta carotene intake was assoicated with an increased risk of macular degeneration. Vitamin B2 (riboflavin) : Deficiency can cause red eye, photosensitivty, and dry eye. Vitamin B7 (biotin) : deficiency can lead to dry scalp, dandruff, or hair loss. Vitamin B9 (folate) : unmetabolized folic acid can accelerate cardiovascular and ophthalmic vascular disease. Vitamin B12 (cobalamin) : Provides relief for patients with pernicious anemia, megaloblastic anemia, and sickle cell anemia. Vitamin C :Assists in collagen fomation and wound healing, including that of the cornea. Deficiency results in slow healing, frequent infections, low platelets, retinal microaneurysms, and cataracts. Vitamin D : Crucial for patients facing uveitis/ retinitis, MS, herpes simplex and zoster, neovacularization jin AMD, and patients at risk for diabetes. ...