Best safety rated prescription glasses I've used
"- The removable side shields work well and allow for decent peripheral vision, much better than any of the universal side shields. - They snap securely to the frame. I'm not worried about them falling off. - Easily removed. I use something thin to leverage them off the frame if I need to. Personally, I insert a thick plastic guitar pick between the frame and shield, towards the front and twist. Any thin rigid item will work. Be careful though, they can pop off and fly a ways if you're not careful."