The polycarbonate eyeglasses lens keeps parents from breaking their budget replacing eyeglasses. If the scratch-proof UV-protected polycarbonate eyeglass lens can withstand a rough-and-tumble day at school, your polycarbonate eyeglass lenses can hold up under the pressure of a squash game. They are the thinnest eyeglass lenses designed for athletics.
A caveat: Only use polycarbonate eyeglass lenses in an approved sports glasses frame. A regular designer eyeglass frame may be fine for a progressive eyeglass lens, but won't weather the impact of a football tackle.