I just received my Rx CraftOptics telescopes with the light. I was working on a quilt, so I immediately put them on to try them. Without any adjustments at all, I sat for and hour and a half using them to finish a piece of applique. What a difference they make. They are comfortable, fit perfectly, not too heavy and I can see the smallest details sitting in a better upright position. I am so pleased. They are everything I expected and more.