In continuation of my update on L-DOPA
In a major scientific breakthrough, a drug used to treat Parkinson's and related diseases may be able to delay or prevent macular degeneration, the most common form of blindness among older Americans.
The findings, published in the American Journal of Medicine, are a groundbreaking effort in the fight against age-related macular degeneration (AMD), which affects as many as 11 million Americans. AMD hinders central vision, and even when it does not lead to blindness it can severely reduce the ability to read, drive, and recognize faces.
In the study, supported in part by BrightFocus Foundation, researchers discovered a biological connection between darker pigmented eyes, which are known to be resistant to AMD, and increased levels of a chemical called L-DOPA in those eyes. Since L-DOPA is frequently prescribed for Parkinson's patients, the researchers wanted to know whether patients who received the drug L-DOPA as treatment for Parkinson's or other diseases were protected from AMD. By combing through massive databases of medical chart data, they reported that patients receiving L-DOPA were significantly less likely to get AMD, and when they did, its onset was significantly delayed.