I recently had a vision problem - I was seeing flashing lights in my peripheral vision when out at night. Saw an opthomologist who diagnosed 'posterior vitreous separation' which is where the gel inside the eyeball separates from the lining of the eye causing a flashing light sensation. He said it would get better with time and is actually quite commom as you get older (I'm 55) When I asked him about diving with this condition he said I should be fine, just don't go really deep. As he was not a scuba diver, I was unable to get a clear definition from him as to what he considered "really deep". Problem is, I'm going on a dive vacation next week and am planning to get myAOW there which, of course, includes a deep dive. Anyone out there been diving with this condition? We're leaving 11/09 so any reassurance would be appreciated. Thanks so much!