I have been told that a low dose - 5mg per week can help arrest the damage to blood vessels in the eye that cause the progression of macular degenereration. The rationale is that the same tissue in the brain that involves Parkinson's disease is found in the eye and therefore the arresting capability of this strong antioxident may be beneficial to the eye disease. It seems like it is worth trying this. My brother has early stage of macular degeneration and has been taking this drug for 5 years and his macula has not gotten worse over this time. Does anyone have an opinion on this?