Bifocal Contact Lenses 
Author Message
 Bifocal Contact Lenses

There have been numerous types of bifocal contacts on the market for
about 10 years now.  My optometrist, a personal friend, tells me that
none of them will give good results.  He says that the focal areas are
very difficult to adjust to and that the performance is not what he
thinks is acceptable.  I would believe that he just is being very
ocnservative because of our friendship.  I  do not have any uniquely
uncommon or special eyesight problems, just simply I am 48,
nearsighted and now need bifocals to read well.

Is there a lens which has recently been introduced that offers
realistic bifocal focus and that can be worn with some degree of
success?




Thu, 08 Oct 1998 03:00:00 GMT
 Bifocal Contact Lenses

Quote:

> There have been numerous types of bifocal contacts on the market for
> about 10 years now.  My optometrist, a personal friend, tells me that
> none of them will give good results.  He says that the focal areas are
> very difficult to adjust to and that the performance is not what he
> thinks is acceptable.  I would believe that he just is being very
> ocnservative because of our friendship.  I  do not have any uniquely
> uncommon or special eyesight problems, just simply I am 48,
> nearsighted and now need bifocals to read well.

Bifocal rigid gas permeable lenses work well. Two brands are Paragon Optical and
Menicon. I wear a pair (Menicon) myself; they work well.

PK
--
Peter R. Kastl, M.D., Ph.D.,   Dept. of Ophthalmology
Tulane University,  New Orleans, Louisiana



Sat, 10 Oct 1998 03:00:00 GMT
 Bifocal Contact Lenses

I fit all sorts of bifocal/multifocal contact lenses all the time.......soft and
RGP.  In fact I wear Lifestyle RGP multifocals, and sometimes Unilens soft.

I've tried---on my eyes---almost every type of bifocal lens.  They work,
sometime perfectly and sometimes with some compromises.  With so many
designs and materials now available, there is most likely a lens to suit
almost any prescription and vision needs.

I can appreciate why some of my collegues are reluctant to fit this lens
design: they require more office visit time, more skill in fitting and the
patient satisfaction rate for docs who don't really understand how to manage
this type of contact lens fitting is certainly lower than for simple soft
disposables.

But then again, when you get it right, the incredibly delighted patient is an
endless source of referrals!

There is some more info at the EyeCare Connection website, the EyeCare
Report on Contact Lenses.  A full report on multifocal lenses is in the works.

---Larry
--

##########################
Larry Bickford, OD
{*filter*} and Pediatric Vision Care
Santa Barbara, Ca.


-----------------------
The EyeCare Connection & {*filter*}Lens

http://www.***.com/ ~eyecare
ftp.west.net/pub/users/eyecare



Mon, 12 Oct 1998 03:00:00 GMT
 Bifocal Contact Lenses

Quote:

> There have been numerous types of bifocal contacts on the market for
> about 10 years now.  My optometrist, a personal friend, tells me that
> none of them will give good results.  He says that the focal areas are
> very difficult to adjust to and that the performance is not what he
> thinks is acceptable.  I would believe that he just is being very
> ocnservative because of our friendship.  I  do not have any uniquely
> uncommon or special eyesight problems, just simply I am 48,
> nearsighted and now need bifocals to read well.

> Is there a lens which has recently been introduced that offers
> realistic bifocal focus and that can be worn with some degree of
> success?



The best (IMHO) used to be Diffrax, made by Pilkington, but they've just been
discontinued.  I tend to agree with your friend, there are no fully predictable
bifocal RGP lenses - trying to get two good images through an optical zone
7.5 mm diameter really is trying to get a quart into a pint pot.  Best thing
is have a pair of simple reading spectacles over the distance RGP lenses.

However, if the patient is really worked up about the idea of wearing specs,
then he/she might be prepared to accept the reduced visual performance that
bifocal lenses give.

Good luck.

Richard

--
Richard Allen BSc FCOptom FAAO DCLP
Optometrist & Contact Lens Practitioner
Colchester Vision Therapy Centre



Mon, 12 Oct 1998 03:00:00 GMT
 Bifocal Contact Lenses

Quote:

>There have been numerous types of bifocal contacts on the market for
>about 10 years now.  My optometrist, a personal friend, tells me that
>none of them will give good results.  He says that the focal areas are
>very difficult to adjust to and that the performance is not what he
>thinks is acceptable.  I would believe that he just is being very
>ocnservative because of our friendship.  I  do not have any uniquely
>uncommon or special eyesight problems, just simply I am 48,
>nearsighted and now need bifocals to read well.
>Is there a lens which has recently been introduced that offers
>realistic bifocal focus and that can be worn with some degree of
>success?


My myopia began at age 17 and progressed.  At 28 my vision was 20/400
when I was fitted with hard contacts, which made a world of
difference.

After 20 years with the same perscription and, incredibly, the same
lenses (I've retrieved them from almost every imaginable place, and
became an expert at disassembling sink traps in distant hotel rooms --
use a wet towel tightly twisted around the nut of the slip joint).

I got my commercial pilot's license and first class FAA medical
certificate, and remained active in sports.  In addition to tinkering
with electronics and things mechanical, I do a lot of woodworking,
which required good near vision.  This was not a problem until I
approached 50, and the onslaught of presbyopia.  Lot's of computer
work since the early 80's also seemed to have an effect.

First recourse was to go to drug store cheapies, which served fine for
reading, but it was no real solution.  I had not been to my
optomitrist for a number of years.  On earlier vists about 5 years
ago, it seemed the choice was to give up some of the distant acuity
for better close up action, something I did not want to do.  And in a
recent eye exam, my HMO eye doctor recommended I ditch the contacts
and go to bi-focal lenses.  Nuts to that.

When my tolerance and comfort level went through the floor a couple of
months ago, I went to my optomotrist who is a bright young woman with
a can-do attitude.  She recommended I try the "life-syle" lenses -- I
don't know the manufacturer--  and ordered up a pair with the warning
that it would require some adjustment and tweaking.

The results are very promising, although I still need some more
adjustment on one eye.  After a second set of lenses, my distant
vision is still very good (except for the {*filter*} right eye lens
which is being re-done), and I can read very well without the
drug-store cheaters.  Using the computer is great, and there is no
difficulty going from distant to near foucs.  Occasionally, I will get
some temporary distortion, I guess from the lenses rolling on the
cornia.  They are larger than my previous lenses, but the fit is great
and I get less dust and trash in my eyes, and I have not yet slipped a
lens.  They are more difficult to pop out, but I will get used to
that.

Right now my left eye is better at distance and my right is better for
reading, however, she feels she can match them up.  Time will tell,
but I am pleased thusfar.

I assume these lenses work on the principle of gravity alignment, with
the heavier portion of the lens doing the close-up work.  It was
interesting that she ordered a blue tint lense when my eyes are
actually greenish-hazel.  She explained that there have been problems
with other tints, and the blue is a very light tint.

The bottom line is that you need a good doctor who has experience with
these things and is willing to work to get it right.  You also need to
have a patient and postive attitude to get the job done.  I would
suggest you go to some one other than a friend so you will feel
comfortable holding their feet to the fire to get what you want.  I
would talk about this at the outset and get a feel for how agressive
the doctor is willing to be to get it right.  Mine told me she wanted
to get it perfect and would do what is necessary to achieve that.



Tue, 13 Oct 1998 03:00:00 GMT
 
 [ 5 post ] 

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