BOY WHAT A DIFFERENCE they make for me. I am about to be 51 and have had to wear glasses for reading for about 8 years. While I could see the hand work I was doing…I really couldn’t see the details…and I found myself squinting a lot to try to “see better”. This product is amazing….I can see such fine detail on the projects that I’m working on, and I realized this afternoon that I’m not squinting any more! My eyes don’t feel tired and my head doesn’t hurt! Best of all…I feel that the quality of my work has already improved by leaps and bounds because I CAN SEE!!! They are GREAT!