Post Lasik "Astigmatism" & possible HOA

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Post Lasik "Astigmatism" & possible HOA

Postby cpchacko » Fri Nov 17, 2006 5:10 pm

I had Conventional Lasik in Singapore at the National Eye Center on July 31 & Aug 1.PreLasik I was -6/-5 and had astigmatism (significant). I asked for wavefront but they felt Conventional was the best way to go.The eye doctor that did the work was highly recommended and is a cornea specialist.

Now my left eye vision is good. My right eye though is only good for normal or good light at distance. I cannot read without reading glasses - even intermediate distance. Esp with the right eye I have ghosting with trying to read small letters unless using the readers.The eyedoctor gave me a prescription for +25 in both eyes and a small astigmatism correction in both eyes (under 100) though he was not sure it would help.My night vision in both eyes is bad - in poor light I don't see well at all. Low light level situations are very frustrating in both eyes.

I am in the US now so went to an OD's optical shop for the glasses and learned I may have significant HOA (Higher order abberations) as a result of the lasik and he recommended I-zon's instead (about USD600 just for the lens). He said those HOA's are a result of poor lasik. He may have just been trying to sell me the Izons but it left me worried and unsure what to do. My eye dr does not want to do enhancement because my measureable astigmatism is too low to justify it and guarantee a good result.

If I have HOA as a result of the operation - is this because of the conventional lasik? The clinic I went to had a steady stream of customers and these are rather particular folks! Would custom lasik solve this problem or make it worse? (I had no measurable HOA preLasik).
cpchacko
 
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Postby LasikExpert » Sun Nov 19, 2006 7:02 pm

Rather than an optometrist with the iZon evaluation device, I highly recommend that you seek wavefront diagnostic from an ophthalmologist with a true wavefront aberrometer. This will better determine your vision problems and will provide you insight on what may or may not be accomplished with a wavefront-guided Lasik enhancement.
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Wavefront evaluation

Postby cpchacko » Mon Nov 20, 2006 12:42 am

Thank you for that answer. I had just written to my eye Dr in Singapore who just got a new and improved machine that includes "the wavefront card" and indicated that when I get back he wants to do exactly that evaluation on me. I like to do it here in the USA but since I had the surgery overseas all my guarantees are with that clinic & that doctor. I just hope these if I really have severe HOA's its not due to conventional lasik. I guess I just have to be patient. Thank you for your advise...will post again when I know more.

What are the risks with the WF enhancement surgery if that is what he recommends?
cpchacko
 
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Postby LasikExpert » Mon Nov 20, 2006 2:54 am

The risks of enhancement surgery are nearly the same as inital surgery with the exception that the doctor understands better how your eyes react to the laser energy and the flap does not need to be created. The existing flap can be lifted.
Glenn Hagele
Volunteer Executive Director
USAEyes

Lasik Info &
Lasik Doctor Certification

I am not a doctor.
LasikExpert
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Posts: 3309
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WF & Enhancement (Not FDA Approved)

Postby cpchacko » Tue Nov 21, 2006 12:33 am

I just called a lasik clinic in my hometown in the USA. They said enhancement using Custom is not FDA approved so only "off label" facilities would do it. I need to find out what is causing the poor vision in the right eye but if it is indeed HOA's how is it to be fixed if not by using Custom Lasik? My current official vision is 6/6 in the left eye and 6/6 less 2 in the right...officially its +.25 in both eyes with very minor astigmatism.

Unsure what to do now....
cpchacko
 
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Postby LasikExpert » Tue Nov 21, 2006 2:56 am

Off-Label Use is a term used for procedures that are legal and appropriate, but are not specifically approved for a particular device or drug. Taking a low dose of asprin every day to reduce the probability of heart trouble is an "off-label use".

You will need a comprehensive examination by a competent doctor to know if enhancement surgery may be beneficial.
Glenn Hagele
Volunteer Executive Director
USAEyes

Lasik Info &
Lasik Doctor Certification

I am not a doctor.
LasikExpert
Site Admin
 
Posts: 3309
Joined: Fri May 12, 2006 6:43 am
Location: California


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