At 07:21 AM 3/4/00 -0800, Scott wrote:

>So, anyone else on the list have any decent info about hyperoxic myopia? My
>cuz is a Navy SEAL, and they have problems when doing training rotations
>with the 02 Rb's for extended periods. Something about the high PP02 that
>reshapes the eyeball. I also remember reading something about the Halls
>experiencing this when filming for days on their RB's.
>
>Scott

Hyperoxic myopia is a transient problem in subjects / patients exposed to 
long PO2 runs. HBO treatment to promote revascularization of hypoxic 
tissues is known to cause hyperoxic myopia. Some patients are thrilled 
since they may suddenly see well without glasses. However, it always 
returns to normal (or baseline) within a few weeks. It's well known 
phenomenologically but I don't think anyone knows the mechanism. Check: 
Eric P. Kindwall MD (1994), Hyperbaric Medicine Practice, Best Publishing 
Company.

regards,

Hans

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