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At 07:21 AM 3/4/00 -0800, Scott wrote: Hello Scott, >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. Banks Anderson, an ophthalmologist, wrote in interesting paper on the topic in which he describes the development of up to 1.6 diopters of myopia in people repeatedly exposed to a PO2 of 2.0. Measurements of the curvature of the cornea revealed no change, so it appears the hyperoxic myopia is caused by a metabolic change in the lens which alters its refractive index. Fortunately, Dr. Anderson found that the myopia wears off after a few months and doesn't appear to have any lasting effect. -Mike Rodriguez <mikey@ma*.co*> Pn(x) = (1/(2^n)n!)[d/dx]^n(x^2 - 1)^n -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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