It is hard to say whether it is worthy to take the prk surgery. It is depended on your needs. Prk surgery is using excimer laser by cutting to refractile corneal flap under the substrate layer. Thereby it could reduce the corneal curvature of pupil area, achieving the purpose of correcting myopia. The popular view is as a kind of transparent material, cornea by cutting into a pair of lenses. It can be corrected 200 degrees - 2000 degrees of myopia. From the current results of clinical observation, this surgery is to correct high myopia of commonly used in the surgery of corneal thickness demand which is higher. It is only suitable for myopic degree which is stable for more than two years of adult. Although it is safe and effective now, it has common complications, including corneal flap, translocation, depigmentation, epithelial implantation, corneal neovascularization and eye winker residue between the layers. Usually before the surgery, you will take the eye exam to see whether you are suitable to take it. Basically speaking, this surgery is safe and effective for people with myopia.
