Large Power Differential in two eyes

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Chao - 14 Feb 2007 20:10 GMT

hi there,

I've been using lens glasses for three years and have been almost
consistently uncomfortable with them. I went for eye check for 4
times or so, and each time the prescription doesn't change much.

I guess the problem might be in the power differential of my two
eyes(-2D, and -4.5D), I did some research and learned this might be
the cause. I tried contacts which is supposed to be better in this
sense, I do feel better but the vision is not as good as glasses,
whenever I look on an object, the focusing with contacts take some
time. The reason might be that contacts didn't correct my
stigmatism( 0.25 maybe). Also, I'm not very comfortable to take it in
and out of my eye daily, and my eye may a bit dry, It's uncomfortable
after one day or two.

I'm thinking about can I use a lens glasses with -2D for both eyes ?
I know it will make my bad eyes lazy, but I really wanna get to a
better status than I currentlly am. To make up, can I use a contact of
-2.5D for my bad eye( so, it gonna be -2+ -2.5 = -4.5 for the bad
eye) ? Or I can occasionlly use a lens glasses(-2D, -4.5D) to get my
bad eye some exercises.

Opinions appreciated!.

Chao.

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Robert Martellaro - 15 Feb 2007 18:09 GMT

>hi there,
>
[quoted text clipped - 5 lines]
>eyes(-2D, and -4.5D), I did some research and learned this might be
>the cause.

Make sure the lenses sit as close to the eyes as possible. The vertical optical
centers must be central pupil. Tip your head down and/or hold the book slightly
higher when reading. It's likely that the vision will now be comfortable.

Hope this helps,

Robert Martellaro
~~~~~~~~~~~~~~~~~~
Optician/Owner
Roberts Optical
Wauwatosa Wi.
~~~~~~~~~~~~~~~~~~
"Science is a way of trying not to fool yourself."
- Richard Feynman

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Chao - 15 Feb 2007 18:48 GMT

Robert,

Thanks for your reply. I understand hold lens close to my eyes reduce
the difference in magnification.

How do you think I put a lens with (-2D, -2D) ? Is there any possible
harm to the eyes ?

Thanks,

> >hi there,
>
[quoted text clipped - 20 lines]
> "Science is a way of trying not to fool yourself."
> - Richard Feynman

Reply to this Message

Robert Martellaro - 15 Feb 2007 19:40 GMT

>Robert,
>
>Thanks for your reply. I understand hold lens close to my eyes reduce
>the difference in magnification.

Right, although in this case it's the difference in the minification, an amount
that is almost always well tolerated, if you...

Don't forget to check the vertical centers- most frames fit so that the center
of the lens opening is well below the pupil, inducing vertical prism imbalance
with anisometropic RXs. This should be measured and the lab should be instructed
to position optical center as needed.

>How do you think I put a lens with (-2D, -2D) ? Is there any possible
>harm to the eyes ?

It shouldn't be necessary, and will probably cause even more visual distress. I
wouldn't recommend it if your eyes are healthy.

Discuss the above with your doctor and optician.

>Thanks,

Your welcome.

Robert Martellaro
~~~~~~~~~~~~~~~~~~
Optician/Owner
Roberts Optical
Wauwatosa Wi.
~~~~~~~~~~~~~~~~~~
"Science is a way of trying not to fool yourself."
- Richard Feynman

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