Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 (Tek) 9/28/84 based on 9/17/84; site hammer.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!genrad!decvax!tektronix!orca!hammer!seifert From: seifert@hammer.UUCP (Snoopy) Newsgroups: net.med,net.consumers Subject: Re: Hard lens advise request Message-ID: <1660@hammer.UUCP> Date: Thu, 28-Nov-85 01:19:28 EST Article-I.D.: hammer.1660 Posted: Thu Nov 28 01:19:28 1985 Date-Received: Sat, 30-Nov-85 00:36:57 EST References: <1600@cae780.UUCP> Reply-To: tekecs!doghouse.TEK!snoopy Organization: The Daisy Hill Puppy Farm Lines: 41 Xref: watmath net.med:2864 net.consumers:3498 Summary: In article <1600@cae780.UUCP> gordon@cae780.UUCP (Brian Gordon) writes: >These are the gas permeables, and new ones, at that. These are even more gas >permeable than the soft lenses approved for extended wear, and the manufacturer >has already applied to the FDA to have them approved as extended wear also. >He is, however, also quite conservative. He recommends that, until the FDA >agrees with the manufacturer, the lenses be worn for no longer than 13 hours a >day, to give the cornea the other 3 hours at normal oxygen levels. > >Is there anyone else out there with the background/experience to either agree >or disagree with that advice? Keeping up with both lenses and glasses is more >hassle than either separately! Yours fit the first time? Must be nice! Okay, time for definition of terms. Correct me if I'm wrong, but doesn't "extended wear" mean they're okay to wear for days at a time? (as opposed to meaning you can wear them for 16 hours instead of 13) I've been wearing standard hard lenses (not gas permeable, no little holes, but *standard*) for 10 years and I wear them all day, usually ~16 hours, but sometimes more. Had them in 19 hours the other week, with no ill effects. (other than feeling rotten from missing sleep) What usually causes problems is suddenly jumping the time up several hours. And smoke is real bad news. I hurt my eyes a lot more from reading so much (and CRTs are a lot worse than ink on paper), than I do from wearing contacts 16 hours a day. If your eyes are perfectly healthy other than needing corrective lenses, your lenses fit correctly, you're not around smoke, dust, chemical fumes, etc. I would say you're safe in SLOWLY increasing your wearing time. (but remember, I'm not your doctor!) If you do increase your time, do it slowly. The pain resulting from increasing it too fast is absolutely unbelievable. Disclaimer: I'm a Unix hacker, not a doctor. Got that? Good! Snoopy (ECS Ronin #901) tektronix!tekecs!doghouse.TEK!snoopy