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Medical Forum / General / Vision / March 2006

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lasik and lenticular myopia

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concerned parent - 31 Mar 2006 08:06 GMT
my daughter's doctor advised us that she would not be a candidate for lasik
because she has lenticular myopia. i thought lasik would be possible since
the problem was with the lens and that it would reshape it. any thoughts on
this?
Dom - 31 Mar 2006 09:42 GMT
> my daughter's doctor advised us that she would not be a candidate for lasik
> because she has lenticular myopia. i thought lasik would be possible since
> the problem was with the lens and that it would reshape it. any thoughts on
> this?

Lasik reshapes the cornea, the front window of the eye. The lens is
different, an internal part of the eye. Lasik doesn't go anywhere near
the lens. Cataract surgery involves extracting the lens from within the eye.

Dom
Mike Tyner - 31 Mar 2006 16:38 GMT
> Lasik reshapes the cornea, the front window of the eye. The lens is
> different, an internal part of the eye. Lasik doesn't go anywhere near the
> lens. Cataract surgery involves extracting the lens from within the eye.

And during cataract surgery, an implant is usually inserted to replace the
natural lens. The optical power of the implant is chosen to optimize vision
and eliminate refractive error, making LASIK unnecessary.

The implant only corrects for one distance, so glasses like bifocals are
necessary to focus near as well as far.

-MT
Glenn - USAEyes.org - 31 Mar 2006 21:02 GMT
>The implant only corrects for one distance, so glasses like bifocals are
>necessary to focus near as well as far.

Oh oh. The folks at eyeonics, AMO, and Alcon are not going to like
that statement.  8^)

There are intraocular lenses (IOL) that are multifocal and there is
even a lens that moves inside the eye to create accommodation. Each
has distinct advantages and disadvantages. None actually "cure"
presbyopia, but each is a workaround that can be acceptable for some.

Refractive Lens Exchange (RLE) is probably not appropriate for someone
under about age 45 and has the ability to accommodate (change focus to
near objects)

See http://www.usaeyes.org/faq/subjects/rle.htm for presbyopia, Lasik,
IOL, and RLE information.

Glenn Hagele
Executive Director
USAEyes.org

"Consider and Choose With Confidence"

Email to glenn dot hagele at usaeyes dot org

http://www.USAEyes.org
http://www.ComplicatedEyes.org

I am not a doctor.
Glenn - USAEyes.org - 31 Mar 2006 16:34 GMT
Your daughter's doctor is offering a more conservative evaluation.

Lasik could correct the refractive error caused by the astigmatic lens
inside the eye, but this may cause problems later. For details on
lenticular astigmatism and Lasik, see
http://www.usaeyes.org/faq/subjects/lenticular_astigmatism.htm

Glenn Hagele
Executive Director
USAEyes.org

"Consider and Choose With Confidence"

Email to glenn dot hagele at usaeyes dot org

http://www.USAEyes.org
http://www.ComplicatedEyes.org

I am not a doctor.

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