The eye is a vulnerable and precious organ. It is recognised that sight is arguably our most precious sense.
Clearly, in situations where there is a potential threat to eye health, we should protect it in all hazardous situations. It also used to be common for people with mild to moderate prescriptions to simply participate in sports without wearing their eyeglasses or contacts.
Coaches and players soon recognised that clear, sharp vision is a vital ingredient in sports performance, and that participating in sports with less than 20/20 vision is counterproductive.