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Are Giant Pupils Really A Danger To Laser Eye Surgery?

By: Dana Siconolfi

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You may be thinking of having laser eye surgery, but what many people don't know is that giant pupils could conceivably disqualify you from being eligible for it.

The pupil is the opening that controls how much light enters the inner part of the eye. The size of it changes in direct response to the changes in lighting. For example, when it is bright, the pupil shrinks. And in poor light conditions, or when it is dark, the pupil dilates or becomes bigger. A lot of people with larger than normal pupils are not even aware of it. If you are highly sensitive to bright lights, there is is a good chance that your pupils may be larger than average.

But there are other causes for enlarged pupils as well. Maybe it is due to the results of drug or medication interactions with your body. In this case, the condition is most likely temporary and your pupil under normal conditions could very well be normal in size.

In addition, in some people the sizes of the right and left pupils may not be identical. But, on the whole, and under normal lighting conditions the diameter of a normal sized pupil is about 3 millimeters. And, the average range is from approximately 2 millimeters to 6 millimeters. If you don't know the sizes of your pupils you can find out from your optometrist who, during the course of a regular eye exam, will measure it's size.

So what exactly is the connection between large pupils and laser eye surgery?

There's a history of patients with large pupils having post op troubles following laser eye surgery. Therefore, if you do have large pupils, some surgeons will not ok you as a candidate for the operation. Of course, with any surgery, there is always the possiblity that there could be post operative problems. One of the common post op problems that those with large pupils have experienced after having laser eye surgery is the seeing of persistent halos when looking at bright objects. For example, they will see halos around car headlights, street lights, bright living room lights, and the like.

One reason why some surgeons may give you the ok and others will not is the type of laser used. When having laser eye surgery performed, the type of laser used is a MAJOR factor. One laser that has caused more and more surgeons to ok laser surgery for large pupil patients is the Allegretto laser. The Allegretto laser is a laser system that has been used in Europe since the late 1990s. It was cleared for use by the Food and Drug Administration for use in the U.S. in 2003.

The Allegretto laser can reportedly successfully treat pupils with a diameter of up to 6 millimeters. Supposedly it can reduce or eliminate the halo effect that happens when laser surgery is performed on large pupils. If the diameter of your pupil is larger than 6 millimeters, the odds that you will have an error free post op procedure diminishes. Keep in mind, however, that even under the best of circumstances that the success rate for laser surgery is in the high nineties percent range. Not 100%. And even though some doctors using the the Allegretto laser report that they have received far complaints about glare, halos, light sensitivity, and night driving glare - remember, fewer complaints doesn't equal no complaints.

To be on the safe size, if you think that you have larger than normal pupils, take extra care even beyond what you would normally do to ensure that your post operation results will be just as you imagined it.

Article Source: http://depositarticles.com/

For more about the issues involved in laser eye surgery such as information on laser eye surgery procedures and cosmetic laser eye surgery, please visit our website.

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