foraker Posted March 31, 2005 Posted March 31, 2005 nothing like having your corneas laser ablated to rekindle your interest in 8000m peaks..... Quote
MisterMo Posted March 31, 2005 Posted March 31, 2005 Wasn't a contributing factor in Beck Weathers deal on Everest the fact that he'd had corrective eye surgery and a side effect of that was that he could'nt see shit at altitude? I remember something like that in the book anyhow. Quote
Dru Posted March 31, 2005 Posted March 31, 2005 Yup. Laser eye surgery = eye can't adjust and loses focus as pressure on eye decreases at high elevations. Quote
foraker Posted March 31, 2005 Author Posted March 31, 2005 everyone remembers the one the one weird case. besides, he had radial keratotomy, not lasik. no one mentions the other cases where people with lasik didn't have a problem at altitude. Quote
rbw1966 Posted March 31, 2005 Posted March 31, 2005 Yup. Laser eye surgery = eye can't adjust and loses focus as pressure on eye decreases at high elevations. Wrong. Quote
Stemalot Posted March 31, 2005 Posted March 31, 2005 Yup. Laser eye surgery = eye can't adjust and loses focus as pressure on eye decreases at high elevations. Wrong. show me supporting documents Quote
Figger_Eight Posted March 31, 2005 Posted March 31, 2005 Hypobaric hypoxia causes corneal edema, which creates a uniform stress on any cornea exposed to high altitude. Intact corneas thicken but do not change in curvature or refraction because of inherent structural stability. However, in RK patients, because of structural compromise in the area of the RK incisions, this area may preferentially expand. This circumferential peripheral corneal expansion may lead to central corneal flattening and a hyperopic (farsighted) shift in refraction. These changes are progressive with increasing altitude and have been described as mildly to severely incapacitating. http://www.wemjournal.org/wmsonline/?req...1&page=0053 Quote
Figger_Eight Posted March 31, 2005 Posted March 31, 2005 A DAREDEVIL 29,000ft hike to the summit of Mount Everest by a group of climbers who had all undergone Lasik surgery indicates that the procedure is safe for those pursuing adventure in the most extreme conditions. http://www.escrs.org/eurotimes/April2003/lasik.asp Quote
Dru Posted March 31, 2005 Posted March 31, 2005 A DAREDEVIL 29,000ft hike to the summit of Mount Everest by a group of climbers who had all undergone Lasik surgery indicates that the procedure is safe for those pursuing adventure in the most extreme conditions. http://www.escrs.org/eurotimes/April2003/lasik.asp daredevil hike Quote
olyclimber Posted March 31, 2005 Posted March 31, 2005 Qoute from that article: "Having Lasik was the best training for Everest I’ve ever done." Quote
slothrop Posted March 31, 2005 Posted March 31, 2005 PRK (photorefractive keratectomy) is the procedure that Air Force pilots are allowed to get. If I remember correctly, it leaves your cornea at the greatest strength after surgery. They can't get LASIK or RK. Quote
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