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From: "Scott" <scottk@hc*.co*>
To: <techdiver@aquanaut.com>, "atikkanstore " <atikkanstore@my*.co*>,
     "Hans Petter Roverud"
Subject: Re: Hyperoxic myopia
Date: Sun, 5 Mar 2000 07:20:10 -0800
Hans,

Let me just take a moment of everyone's time to thank you for your post.
The information you also posted about wet vs. dry PP02 tolerance was also
very useful. Despite my extreme lack of medical knowledge, your posts
are always extremely informative.

I understand that hyperoxic myopia is transient. In my cousins case, after
several days of training rotations, using the LAR V's, they cant see to hit
the broad side of a barn while shooting. After a few days, the situation
goes away. Its my understanding that this takes quite an exceptional
exposure to 02 for the symptoms to materialize.

While I have your ear, I was hoping you could expand a little on the info GI
put
forth a while back concerning the oxidation of alveolar proteins during high
PP02 deco gas use.

The nearest library of any size to where I live is a 2 hour drive, so, if
you were
wondering why I am such a sponge for info......

Scott

Hans wrote:

> 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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