When I wore contacts, I always swam with them because I was extremely nearsighted and couldn't make it into the pool with out them. I wore hard contacts and soft,never lost a one. I had Implanted contact lenses placed 8 years ago...too blind for Lasix...they work great BUT now I cannot see a thing under water ,goggle make it a bit clearer but not much. My eye doctor tried to explain why, but over my head!