I purchased for the purpose of controlling cataract. I don't know whether there is improvement or not. But the medicine is working very well on my body. About 20 years ago I found a (don't know the medical name as it was not shown to any doctor) on back head which is about 1"radius filled with water and mamsam. Surprisingly now water is absorbed from that "kanithi" and it is without any pain. This is the progress I found after using 2 bottles fully. Thank you