Hi,
After a few deep dives last week, I experienced a blurred eyesight during
ascent/safety stop and at the surface. Only after an hour or so, my vision
returned to normal again.
I wear hard, gas permeable contact lenses. A girl who dived with us and who
also wears hard, gas permeable lenses, had the same experience.
In the meantime, I have been told that this effect might be caused by the
lenses (although they are supposed to be gas permeable) blocking the escape
of expanding gas in the eyeball tissue during ascent. I have never
experienced this phenomenon during shallower dives (max. depth until last
week: 28 metres, and well within the non decompression limits).
Does anyone know anything more about this phenomenon and whether it could
cause damage to the eye?

Thanks!
Remco Wagemakers
PADI Rescue Diver (Deep Diver certificate pending)