I am not sure. Maybe there are some football players wear contact lenses. And wearing contact lenses can help athletes see better for whoever with poor vision. So, wearing contact lenses can help them play better in the sports. I once heard that there are some athletes wear contact lenses during Olympic games. So, personally, it is safe to wear contact lenses.
i think some football plays who have vision problems choose to wear contacts for vision aids instead of wearing glasses. You know, football is very competitive, so i think players who have defective vision should wear goggles, which can make them see clearly and protect their eyes from unexpected accidents. Speaking of which, wearing goggles is a better way to go, rather than wearing contacts.
Yes, they can wear the contact lenses. And I think a lot of football players wear the contact lenses when they playing. However, it is not suggested because the sweat coming down into the eyes may let the eyes get infected. Thus, you'd better not wear the contact lenses when playing.