Within a few days of taking the supplement, my daughter, age 58, whose eyes worked separately form each other--she had to use one eye or the other, (walleyed) both eyes started working together. Also , even though vision is still blurry, she was able to thread a large eyed needle and sew. I have many problems with vision. Macular degeneration, loss of peripheral vision and scar in left eye. we have taken vitamins for only one month, so it may take longer for me to see results.