Slainte!

I want to try on some new sandals. What size would be right for me?

-375 in both eyes.

Assuming a bunch of other stuff.

-MT OD

Subject:  Dense remarks about mono-vision.

You are norally prescribed for "Best Visual Acuity",

The -4 and -4.75 will give you 20/20 in both eyes.

But with presbyopia (with age) you will lose some
near vision.

The intention of monovision is to give you near vision
in one eye, with the other with 20/20.

One way would be to continue with the -4 diopter,
and get a -3.75 diopter for the other eye.

This would give you approximately 20/70 in that
eye, but with both eyes open, perhaps 20/20,
because the brain selects over-lays the two
images, and selects the sharper.

Thus you might request that one eye be "reduced"
in power by about 1 diopter.

This should give you reasonable near vision (with
the -1 diopter under-prescription, and excellent
vision with both eyes open.

And you are correct to "test" the concept
in this manner.  Some people like it -- others
can not stand it.

As always, you can expect that I will be
"attacked", because of this review.
Notice, they just gave you no meaningful
discussion AT ALL.

Maybe they will "wake up" now and give you
a more complete review.

Enjoy,

Otis

On Jul 14, 7:16 am, harn...@iol.ie wrote:

What amount of myopia (nearsighted, shortsighted) vision in the
undercorrected eye is best for monovision will depend greatly on your
personal desire. Your eye doctor will probably start with about a 1.50
diopter undercorrection and then adjust up or down per your
preference.

After you have tried monovision contacts for several weeks you will
know if monovision works for you - it does not for everyone - and then
you can consider monovision Lasik or whatever surgery your doctor
recommends.

You may want to read our article about monovision at:
http://www.usaeyes.org/lasik/faq/lasik-monovision.htm

Glenn Hagele
Executive Director
USAEyes (TM)
Patient Advocacy Surgeon Certification

"Consider and Choose With Confidence" (TM)

Email to glenn dot hagele at usaeyes dot org

http://www.USAEyes.org

Lasik Bulletin Board
http://www.USAEyes.org/Ask-Lasik-Expert/

I am not a doctor.

Copyright 2007
All Rights Reserved

I wear contacts and my prescription for distance vision is -5.5/-4.5
(L/R).  i was initially aginst the monovision idea as I wanted to have
both eyes in good focus at a distance.   I tried -4.5 in both eyes as
sugggested by an eye doctor friend but I found the left eye was just a
little too undercorrected and I could always notice the left eye being
blurry at a distance even though the right eye was sharp.  My brain
was not totally ignoring the left image at a distance, probably
because it was too different from the right.  I had some other lenses
that were -4.75 and tried one of those in my left eye and it seemed to
work better for me.  With distance vision, it seems like both eyes are
sharp although if I close my right eye I can see the left is out of
focus.  But with both eyes open it LOOKS like everything is in good
focus as a distance.  And when I look up close, like reading, again it
seems like everything is in good focus unless I close my left eye,
then I notice the right eye is out of focus..  So I think the key to
successful monovision is finding the prescription for the non-dominant
eye that works at reading distance but is not TOO far out of focus at
a distance that you notice it,   The brain seems to select which ever
eye is the sharpest/most comfortable, and at a typical computer screen
distance this can shift from one eye to the other without me noticing
as I move slightly closer or farther away from the screen.  Apparently
the prescription needs to be fairly precisely chosen but once you get
it right it can be very convenient.  I still keep some -5.5 lenses for
days when l be driving, etc where I want to optimize my distance
vision.