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Home > Archive > Lasik Eyes Surgery > January 2006 > Available State of the Art in US? I need repai
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Available State of the Art in US? I need repai
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| asdfasdf 2005-12-29, 1:06 am |
| I don't frequent usenet much anymore, but I thought I'd explain my situation
and ask about newly available technoloy.
Approx 10 years ago I had "ALK" performed on one eye, correcting it from -9
diopters. Well almost correcting it! It turns out that I have rather large
pupils and the correction area did not fully span my vision, leaving me with an
annular ring of uncorrected vision when my pupils open wide. The net result is
that in low light, I have massive light flare that would make it impossible to
drive at night if not for my uncorrected eye, still at -9 diopters.
Jumping past the frustrations and accusations to the technology. My question is:
Has the technology advanced enough, (wave front LASIK?), to treat the annular
ring area without impacting the main center in order to get me back to
something approaching normal? I'm not willing to have the other eye done until
the first eye is sufficiently corrected to make me confident of success.
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| Glenn - USAEyes.org 2005-12-29, 1:06 am |
| I'm sorry to hear of your difficulties. It appears that you had ALK at
a time when PRK could not reliably and safely provide a -9.00
correction and LASIK was newly developed and not widely accepted.
For those who don't know, Automated Lamellar Keratoplasty (ALK) is a
process of using a microkeratome to first remove a "button" of corneal
tissue similar to LASIK, however this button is completely removed and
then the microkeratome is set to cut second deeper pass. This second
pass removes a thin slice of cornea and flattens the center. In the
case of a -9.00 correction, about 108 microns of tissue would be
removed. The button is then repositioned over the area.
ALK can also be done without the button by just removing central
tissue, and ALK was performed with an partially attached flap rather
than a button.
Your problem relates to the treatment zone being smaller than the
naturally dilated pupil. See
http://www.usaeyes.org/faq/subjects..._pupil_size.htm
In the US, current custom wavefront-guided flying spot lasers (Alcon
LADARVision CustomCornea and Bausch & Lomb Technolas 217z Zyoptix)
would probably be the lasers to investigate. The WaveLight Allegretto
wavefront optimized laser may (emphasis on "may") be up to the task,
but this will depend upon the exact nature of your situation.
If you are now hyperopic (farsighted, longsighted), then it may be
necessary to utilize the Visx S4 CustomVue laser. It may be more
limited because of its larger beam size, but this too depends upon the
exact nature of your situation.
Outside the US lasers have expanded abilities that may or may not be
important.
In fact, much depends upon the exact nature of your situation. If the
edge of the ALK interface is larger than your naturally dilated
pupils, then the probability of a good outcome goes up. If the edge of
the ALK interface is smaller than your pupils, the probability of a
good outcome goes down or becomes near impossible. If you are
hyperopic, or plano (no refractive error) the difficulty is greater
than if you are myopic (nearsighted, shortsighted). And none of these
custom wavefront-guided lasers can see through highly aberrated
corneas, so it may be that a reading from which the ablation pattern
is derived is not even possible.
Something that you should investigate is using eye drops to reduce the
size of your pupils when you are in low light environments.
Pilocarpine does a good job, but is a bit harsh. Alphagan P is a
glaucoma medicine that has a side effect of reducing the pupil size,
but nearly so drastically as pilocarpine. These may be appropriate
"work arounds" that can get you by.
I highly recommend that you visit a very knowledgeable refractive
surgeon who has available more than just one laser. Preferably someone
who is affiliated with a teaching hospital. If you would like, I'd be
glad to help you locate someone near you. Just send me an email.
For the good news - yes, there actually is some good news - several
lasers are able to correct your uncorrected eye and avoid the problems
you are suffering from the ALK. When you visit the specialist, you can
discuss what options are available for you in that regard.
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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asdfasdf
If you have enough cornea for correction you require very competent
doctor. 1/100 all doctors!
Also exists "topography guided ablation" .
search google "topography guided ablation"
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| Marshall Cosme 2006-01-09, 1:02 am |
| http://www.321recipes.com/aspartame.html
Please excuse the interruption , but I thought you may be interested to know
what may be causing all kinds of health problems for yourself or for your
loved ones. I can't seem to get it through to my wife's brain about this
vital health issue, Now she is always saying she is having trouble with her
vision. Gee, I wonder why? I am so pissed off right now, I really want to
slap some sense into her. She has been feeding this poison to my four
children for years after I asked her not too, so you can see why I said what
I said previously, but I would never hit my wife. Why are people ignore what
science brings to are attention about health issues. I am really upset, but
I hope this helps you....since I can't get through to my wife of 16
years.....!!!!!!!!!!!!!!!!
"asdfasdf" <dont-no-spam@bother.net.invalid> wrote in message
news:Y291bGRiZQ==.b4340c96865fe130b501f99b1d8017d9@1135831348.nulluser.com...
>I don't frequent usenet much anymore, but I thought I'd explain my
>situation
> and ask about newly available technoloy.
>
> Approx 10 years ago I had "ALK" performed on one eye, correcting it
> from -9
> diopters. Well almost correcting it! It turns out that I have rather large
> pupils and the correction area did not fully span my vision, leaving me
> with an
> annular ring of uncorrected vision when my pupils open wide. The net
> result is
> that in low light, I have massive light flare that would make it
> impossible to
> drive at night if not for my uncorrected eye, still at -9 diopters.
>
> Jumping past the frustrations and accusations to the technology. My
> question is:
>
> Has the technology advanced enough, (wave front LASIK?), to treat the
> annular
> ring area without impacting the main center in order to get me back to
> something approaching normal? I'm not willing to have the other eye done
> until
> the first eye is sufficiently corrected to make me confident of success.
>
>
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