PreOp® Patient Education Opthamology: PRK Laser Eye Surgery

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Your doctor has recommended that you undergo Photorefractive Keratectomy - or PRK Laser surgery - to correct a vision problem. But what does that actually mean?

The human eye is constructed like a camera ...with a clear lens in the front and light-sensitive tissue at the rear. This tissue makes up the retina which acts like photographic film.

In an eye that has perfect vision, light rays passing through the pupil are focused by the lens to fall precisely at the center of the retina. There are many common problems that can affect the eye and prevent light rays from focusing properly on the retina.

Three of these problems, myopia - or nearsightedness; hyperopia - or farsightedness; and astigmatism can often be corrected or reduced with the use of PRK laser surgery.

Myopia, or nearsightedness, occurs when the shape of the eye is too long or the curve of the cornea is too extreme. In this case, light rays are focused on a point in front of the retina - instead of on the retina itself.

Hyperopia, or farsightedness, occurs when the shape of the eye is too short. In this case, light rays are focused on a point behind the retina.
Astigmatism occurs when the cornea is unevenly curved,
causing light rays to fall off center or not to focus properly at all.
In either case, PRK laser surgery can be used to flatten all or part of the cornea ...allowing your doctor to cause the focal point of light entering the eye to fall more closely to the center of the surface of the retina.

PRK is a simple and nonintrusive procedure that is designed to reduce or eliminate the need for glasses or contact lenses. PRK laser surgery generally does not have any effect on a patient's overall health and there are no risks in choosing not to have the surgery.

Category:

Education

Tags:

• PRK
• Laser
• Eye
• Surgery
• Photorefractive
• Keratectomy
• retina
• nearsightedness
• Myopia
• farsightedness
• hyperopia
• astigmatism
• weight
• medicine
• drugs
• aging
• surgery
• AARP
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[Ioganstone]

eyeballs to you

[cfryant]

There are also no risks in choosing not to crash your car into a tree.

[reidy19841984]

so i'm gong for eye surgery, though i'd you tube what there doin to me ....first 30 seconds was white meat with a butchers knife..... fuck i hate KFC adds

[hassanm90]

No your 15 your still growing so you cant get it you have to wait when your eyesite goes stable

[Morgsy5860]

Does it hurt or have any effect like that? Im 15 and have bad eye vision and im fed up of glasses! :)

[SORANDOM4877]

I'm blind as heck , and I'm only 15. I don't have the money for this. I'm going to be fully blind when I'm 20. I've wanted to be an artist since I could talk. Since I can't see my art , there's no point.

[gentlemen59]

I'm in, Budlight

[selfownxx]

@fudge1monkey I think they just mean as opposed to something like an appendectomy, in which case there usually is a risk of not having the surgery... But yeah still fucking obvious.

[itsStruth]

This is wrong. This shows parallel rays going through all places on the lens focusing on the the retina. That's the focal point and not the image location. The image forms behind the focal point.

[highnotelownote]

@angelliki1994 it usually takes up to 2 and a half hours. It doesn't hurt at all but u feel discomfort in some places. You will see during this procedure but the Opthamologist will hydrate your eye so there's no uncomfortable dry-eye feeling. Hope this helps!

[renekenshin6573]

There are no risk in choosing not to have the surgery? That's too damn confusing -_-

[MrPuckobello]

why am i looking st this -.-