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Re: Rub- vs. no-rub for extended-wear contacts
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Re: Rub- vs. no-rub for extended-wear contacts -- Posted by Lothar of the Hill People on 08-14-03 11:22
On 14 Aug 2003 06:59:36 -0700, drfrank21@hotmail.com (drfrank21)
uttered like so:
>Personally, the only lenses I'm comfortable with ew usage are the Night
>and Day lenses but occassional overnights with your lenses should be
>okay.
Thanks very much for that advice, Frank. I am becoming more and more
confused as to how these lenses are supposed to be worn as I look into
this further. I just went to the U.S. Food and Drug Administration's
website, and found two "decisions" listed for these lenses. One is
dated January 1999, and is a 510(k) Summary, if that means anything to
anybody. It lists the trade name for these lenses as "Biomedics 55
(ocufilcon D) UVBlocking Daily Wear soft (hydrophilic) Contact Lens,"
and says that they may be prescribed for "daily wear for disposal
after removal in the Disposable Lens Program or for cleaning and
disinfection in the Scheduled Replacement Program." The other
decision is a "Premarket Approval Decision for March 2002," and lists
the product as "Biomedics Asphere (ocufilcon D) Contact Lenses for
Extended Wear." This one says the lenses "may be prescribed for up to
7 days/6 nights between removals for cleaning and disinfection; or for
disposable wear as directed by the eye care practitioner."
I am confused as to whether these two decisions are for the same lens,
or if there are two formulations of Biomedics 55 lenses. Or perhaps
the same lens was later reclassified for extended wear use? My box of
lenses says nothing other than "Biomedics 55 ocufilcon D."
>The provider, with the aid of a slit lamp, can very easily quantify
>deposit formation. I've had patients with severe deposits of their cl's
>be asymptomatic and others have very irritated eyes with just a mild
>coating. But in general, if the cl's feel irritating (even after cleaning
>them) the patient should just toss them.
Well, for me the only time when they ever really feel irritating is
when they are new, so irritation will not be a good indicator for me
for when it is time to throw them away. My main problem is with
blurred vision in these lenses from time to time (both when they are
brand new, and when they are older--it seems they are the clearest
about halfway through my 2-week wear program).
Lothar
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