How do athletes wear contacts, glasses or any kind of corrective lens while playing?

i know that not all athletes are 20/20 vision. at least some of them got to wear some kind of corrective lens whether it is contacts or glasses, most likely contacts because it would be hard to play wearing glasses. lets take basktball for example, when players get poked in the eye accidentally, i never see them pick up the contact from the ground , go to the locker room to fix it. so i wonder if it is a requirement for athletes to get a eye laser surgery before they start playing?
Answer:
most with less than perfect vision wear contacts. i wear them, and have been poked in the eye and my contact didn't fall out. so just cause you never saw a bball player pick a contact off the ground, doesn't mean he wasn't wearing any.

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