Does anyone have astigmatism and wear contact lenses in band practices? if so, does this problem sound familiar to anyone else? I could be sittin in a band practice totally fine, no probs - seeing the music fine. then, a few minutes later, everything is blurred and its almost like im not wearing my lenses at all, and all i can make out is the direction in which the notes are going, not the actual notes! not exactly ideal situation!!