Everyday eyewear does not qualify as protective eyewear. When playing a sport or working on the job, protective eyewear is designed for these tasks and made not only to help your vision, but also to withstand impacts. Most sport frames now come with rubber padding around the nose area or wherever the frame comes into contact with the head attempting to add a cushion for the individual.
Most protective sport eyewear is made of polycarbonate. This material is chosen because not only does it have a high impact resistant lens but it also has built-in ultraviolet protection. The downside to using polycarbonate is that it can easily scratch. However, you can request to have a scratch resistant coating