CSvax:cak (02/07/83)
I just broke my glasses for the nth time and decided to get contacts, and end it all. So, I eagerly read all the articles that came in about contacts, and talked to colleagues that wear contacts. I have a few questions: 1. It has been mentioned that some opthalmologists and opticians will not recommend Permalens for first time contact wearers (like me). Anyone else have a feeling about this? Am I asking for trouble by trying to go with Perma right off? It seems like what I really want... 2. I'm myopic, with -6.0 in one eye and -6.5 in the other. It would seem that Soflens is out, right? (I believe that -5 is the limit there). 3. I haven't seen anything mentioned here about "oxygen permeable" lenses. A friend here swears by them. Can anyone tell me more about them, or relate experiences with them? I'm getting a backache from keeping my nose 6 inches from the screen, so quick responses would be appreciated! Yours in blindness, Chris Kent
david (02/09/83)
I have just started wearing ext. wear lenses after
5 years of eye wear. I believe the make is Hydrocurve or
something like that. During an eye exam my doctor showed me
a leaflet on a new lens. The name escapes me now but the model
number is 70 (seventy). The following table shows a comparison
of the Hydrocurve, Permalens, and the XXX70.
% water oxygen tear strength
permeability
Permalens 70 14.5 1.8
Hydrocurve 55 17.5 8.5
xx70 70 22.5 18.0
My doctors unwillingness to fit Permalens to first time
users was the extreme flimsiness of the lens. If you had
experience with daily contacts, handling the large squishy
ext. wear lens would be no problem, however, ham handed
first timers tend to rip them to shreds.
An advantage to the new lens is the material.
Eye proteins will not stick to them so the major cause
of discomfort over time is eliminated.
Now the disadvantage, the new lens is not yet
approved buy the FDA for extended wear, only daily wear.
This means your doctor is required to tell you that you
can't wear them for extended periods. My doctor did
say his patients report no trouble wearing them for
two weeks. The data is there, the new lens will let
more oxygen to your eye and is strong enough to withstand
the boiling method of cleaning.
Even though the extended wear lenses are hard to
handle, they are the greatest thing since net news. I
started wearing them the day I went for the contact exam
and have had no problems. You will soon hate your glasses.
Now at 20/15 , David Hayes
Tektronix!tekid!david
P.S.-- Has anyone heard of the new portable scopes introduced
this week????