[net.med] Extended Wear Contacts - Some Questions and Answers

ijk@hou5e.UUCP (02/02/84)

Recently I took the plunge and started wearing contacts ( extended
wear).  After nearly a week of having them in my eyes, I thought
I would relate my exeriences.

	In general, I like the idea of being able to see at any time,
day or night.  However, my vision is still a bit blurred by the effects
of the contact (even though I irrigate my eyes constantly with drops).
Is this normal, or am I stuck with a compromise?

	WARNING: these contacts are not designed for use in swimming.
Also, they should not be worn while taking a shower!!!!!!!  Since I
take a shower daily, and one can keep these lenses in for a week before
cleaning (short cleaning, after two weeks, overnight cleaning is recommended), 
I was faced with a dilemma (actually lost two lenses out of my eyes,
but recovered one; after taking a shower).  I found that swim goggles
seemed to help immensely ( I cut small holes in the bottom to let any
water that forced its way in, out), and I recommend this approach.

I would appreciate any advice from other wearers on the extended bluriness.
Thanx,

Ihor Kinal
hou5e!ijk

rlr@pyuxn.UUCP (Rich Rosen) (02/03/84)

This topic was discussed once before, with a number of people espousing
a number of different opinions about these extended wear lenses.   I've
had them for seven months now, and my own opinions of them have improved
greatly.

1)  The blurring that you speak of went away for me only recently.  I don't
	have to "irrigate" as much as I used to, and the lenses are more
	comfortable now.  I originally had problems sleeping with the lenses
	in, but even that problem has subsided.  I found that the use of a
	humidifier in my bedroom vastly increases my closed eyes' tolerance
	to the lenses, and I've been able to wear them for five days straight
	with no problem (Thanx, Sharon!).  Even before I was able to wear them
	overnight, I found I was able to wear them for longer daily periods (up
	to 20 hours).  The tolerance problem varies from person to person.
	Some can where the lenses for two weeks (or four weeks for the newer
	lenses), but it's recommended that you protein-clean the lenses once
	a week.  Other people have more limited tolerance, and their doctors
	recommend only three or four days of continuous wearing.  Still others,
	like me, start out in the second category but improve their tolerance
	as time goes on.

2)  I was told by my doctor that showering with the lenses in is O.K., but
	that one should exercise caution (i.e., don't look straight into the
	stream with your eyes open!).  But swimming is still a definite
	no-no.  The reason:  not because they might get lost (which indeed
	they might), but because the chlorinated water/sea water would get
	abosrbed by the lenses, and this would not be good for your eyes.
	I had asked about the idea of using goggles for swimming, but
	apparently they are still not secure enough to be safe.  Anyone know
	of any swimming goggles specifically for lens wearers??
-- 
Pardon me for breathing...
	Rich Rosen    pyuxn!rlr

avi@pegasus.UUCP (02/06/84)

I have been getting quite comfortable with my extended wear contacts. My
visual acuity is not as good as with my normal lenses, but I hardly notice
them when they are in. Rubbing my eyes and showering are no longer a problem
-- now that my rubbing & blinking habits have changed.

I would never have thought of wearing my lenses while swimming, until some
people mentioned it on the net a while ago.I find that swimming a mile with
my lenses in is no problem. Goggles can help, but they remove much of my
peripheral vision. If you don't open your eyes wide, and don't dive under
water, and avoid splashers, there is little danger of losing a lens.
However, the chlorine can cause problems. I have experienced conformational
changes in one lens that caused diminished vision and discomfort for a few
hours -- until my natural tears washed away the chlorine and restored the
proper osmotic balance to restore the lens to the proper shape.

My optometrist says that this can reduce the useful lifetime of my lens by
about a factor of two. However, since I swim at least every other day, there
would be little point in having extended wear lenses unless I could keep
them in for extended periods. (My longest has been six weeks)

A few tips I have been given (for my type of HydroCurve lenses) include:
	- Only keep the lenses in the enzymatic solution for about two hours
	  -- not ovbernight.
	- Use a saline solution, not distilled water.

These steps help prevent infiltartion of the lens by the enzyme, due to
conformational changes in the lens -- while still cleaning off protein
deposits. I see no major signs of allergic reaction, although the skin below
my eyes gets reddish at times.

-- 
-=> Avi E. Gross @ AT&T Information Systems Laboratories (201) 576-6241
 suggested paths: [ihnp4, allegra, cbosg, hogpc, ...]!pegasus!avi

ignatz@ihuxx.UUCP (Dave Ihnat, Chicago, IL) (02/10/84)

Re:  Still having blurred vision

I would suggest that you probably DON'T have a good fit.  Please see
your optometrist (or whoever).  These things are difficult to
fit--trust me, I've been through it!--especially if you've any
astigmatism at all.  However, it *is* normal to be blurred for a few
minutes in the morning right after opening your eyes.  This will fade
in 5-10 minutes, or faster with a quick saline irrigation.

Re:  Not to shower/swim with them in

Again, this suggests to me that yours are not fitted properly.  I've
had mine for over a year, and they're impervious to showers.  In fact,
recently (while, admittedly, a bit under the influence of Uncle Jack
Daniels), I *did* swim with them!  Kept my eyes closed underwater, and
no problem.  No, I don't recommend the swimming--but this is an
example of how the lenses should fit.

(Actually, the danger in the swimming is more the fact that the lenses
like to pick up atmospheric--and waterborne--contaminants.  Like
chlorine.  I cleaned mine shortly thereafter.)

				Dave Ihnat
				ihuxx!ignatz