I'm thinking of getting a pair of black scleral effects lenses for this Halloween, and maybe for to go a-gothing a-nights, but if I'm going to be blowing $250+, I want to get some bang for my buck. If used sparingly, say twice a month, tops, how long can they last? Is there any way to improve their lifespan? At what point do they become unsafe?
См. статью: How long do scleral contacts last on average?