You know one of the ways of vision improving is doing more exercise of your physical body. Playing football itself will improve the blood circulation system within your whole body as well as your eyes. It is very good to help with your eyes health. As for the convenience of your vision aid, you can wear contact lens when you playing football. They are light and tiny and available, it will not bring any burden on your face when you doing strenuous sports. However, please prevent the dirty and sweats get into your eyes when you wearing it. The virus will lead the inflammation in your cornea especially when you wearing contacts.