Regular Astigmatism?

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Regular Astigmatism?

Postby Arash » Thu Jun 29, 2006 7:53 am

I’m a 24.5 years old male and my occupation is electronics engineering, my right eye prescription is : -4.5,-1.5 , 15 And my left is : -4.00, -2.25,170
The thickness of my right cornea is 567um and my left is 553um (not measured by my doctor himself but an optometrist). My right pupil diameter is 6.1 and my left is 5.6.
I have some questions:

1-my doctor told me that I have low risk of cornea bulge cause of my “Regular Astigmatism” shape in my Orb scan results (approximately like 2 cones connected to each other at the top), but I “felt” he is trying to reduce his own responsibility by determining this risk of surgery for not to be convicted to malpractice in the case of a difficulty even if the probability of difficulty is low. Is there really a relation between regular astigmatism and cornea bulge?

2- Even by now(before surgery) I have difficulties looking at contrasting objects (like black color words written on a whiteboard) and light sources(like digital indicators of temperature on refrigerator),I see light sources scattered and I told it to my doctor .he made attention but didn’t say anything, is it Important or not?also scattered light sourrse can cause difficulties , I have had seen halos around source lights since the time I weared glasses but halos are not a major vision problem at all(but scattered source light have apeared 4-5 recent years and makes bad vision).

3-I have little sensitivity to light just if I wake up from Bed at early morning (when it is still dark) and turn on a Lamp, but I have no problem if I wake up at day (sun) light and I have no Problem with my eyes if I stay awake late at night with artificial light (not sun light). The sensitivity is so that my eyes will be red and tears will drop from my eyes, what can be the problem with me, and can it influence my surgery outcome? I don’t think there is any glare/sensitivity test in my country.

4-Am I a good candidate for surgery and what is the best kind of surgery for me. My doctor told me that Lasek/PRK is appropriate for me and Lasik is a poison. Why?

Thans for your good services.
Arash
Arash
 
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Joined: Wed Jun 28, 2006 10:08 pm

Postby LasikExpert » Thu Jun 29, 2006 4:06 pm

Arash,

Your pupil size is about normal, corneal thickness does not present any special problems, your astigmatism is rather high and may indicate a different problem, the other issues you raise may be problematic..

1) Your high astigmatism will be more difficult to correct and may require more than one surgery to correct fully. As a (very) general rule, when astigmatism is more than half the sphere (nearsighted, farsighted), the outcome is less predictable and more likely to require enhancement surgery.

2) This concerns me. My concern is that the progressive vision quality problems often indicate the presence of instability or disease. Your age, the position and amount of astigmatism, and your progressive vision quality degradation are all significant concerns.

3) It is not surprising to have light sensitivity when first awaking, however red eyes with reflexive tears every morning is not normal.

4) I don’t think a decision can be made about your candidacy for Lasik until the cause of these other issues is determined. If you have instability of refractive error, unstable vision quality, or corneal disease like keratoconus, then you should refrain from elective surgery until the cause of these problems is determined and resolved.

I recommend that you be evaluated by a corneal specialist. You may want to seek care at the ophthalmology department of teaching hospital affiliated with a university.
Glenn Hagele
Volunteer Executive Director
USAEyes

Lasik Info &
Lasik Doctor Certification

I am not a doctor.
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Postby Arash » Sat Jul 01, 2006 1:27 pm

Dear Glenn,
My prescription and other eye problems cited, are stable more than 3 years. But still I didn’t get my answer,
-Does regular astigmatism (with 2 axes approximately perpendicular to each other) Increase the risk of cornea bulge? Is there any relation who is mentioned before this in literature?

2 other questions:
- I work and study simultaneously, hence most of my readings are at night (8pm-2am), does night bad vision include reading at night?

- May a dry eye syndrome last for long periods or forever?

thanks
Arash
 
Posts: 2
Joined: Wed Jun 28, 2006 10:08 pm

Postby LasikExpert » Sat Jul 01, 2006 7:26 pm

The fact that your astigmatism in one eye is pointed up and the other is pointed "down" is an indication of the possibility of keratoconus, however if your vision has been stable for three years it is not likely that this is a problem. If members of your family have had keratoconus, then you will want to be very careful about any surgery that removes tissue or may weaken a potentially compromised cornea. We have an article about Lasik and Keratoconus that you may want to read.

If your corneas are healthy, then the angle (even two different angles) do not indicate an increased risk for corneal ectasia (forward bulge) after surgery.

Night vision problems do not actually relate to the time of day, but relate to the amount of available light. If you use good lighting to read and study you would not normally be subject to "night vision problems".

Lasik induced dry eye problems are usually temporary and resolve withing the normal six-month healing period. Dry eye is also a natural occurrance that can affect a patient who has not had laser eye surgery. It is possible, although relatively rare, that dry eye can be permament. You may want to read about Lasik and Dry Eye
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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