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Corrective refractive surgery involves cutting on your cornea (The clear part on the front of your eye) with either a laser or a blade. The cornea is responsible for bending most of the light that comes in your eye ~+40 diopters worth. The lens of the eye bends ~+20 diopters. The vitreous and aqueous humors (gels in the eye) bend ~+10. The cornea is part of the fiberous tunic of the eye. This tunic is primarily responsible for the structural integrity of the globe. Here is the problem. The eye is under pressure. Refractive surgery monkeys around with the one part of the eye that is responsible for bending most of the light and, at the same time, is responsible for the pressure integrity of the eye. This is a recipe for disaster. The armed forces used to kick you out if you had it done. The original version of this surgery (Radial Keratotomy) seriously limits the eye's capacity withstand environmental pressure changes. The conceptual basis for this surgery is flawed. I would recommend against it. Most people get it for purely cosmetic reasons which is a poor rationale for *any* surgery.
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