Well-fitted, protective eyewear is a must for kids who wear glasses and play sports to prevent vision threatening eye injuries. Everyday prescription glasses aren't a good choice for the gym, track, rink, or ball field. An eye doctor can help you choose what’s right for your kid. You'll want frames made out of tough stuff that won’t break, like polycarbonate. Kids are out in the sun a lot. Ask about sunglasses to protect eyes from harmful ultraviolet light.