This product really works for me. Saw a difference before I had finished the first bottle, my vision had improved! I've been using this for several years now, and at 58, while I still need reading glasses, my vision improved signifcantly.I haven't needed glasses for distance, and still don't! My distance vision went from 30/20 (I hope I wrote that right...whaat most people see at 30 ft. I saw 20) to 20/20! Won't be without it. I "see" a difference if I stop taking it. Take it as directed on the bottle.