PRK ( Laser Photo Refractive Keratectomy )


   In this light rays from excimer laser is focused on the corneal surface. This vaporizes corneal tissue and changes its curvature. This is all controlled by sophisticated computer. Thus the power is reduced.

Disadvantages

Recovery period is longer than lasik procedure. It may take 5 6 months for stabilization of vision and may be a year

Recommended to correct upto 8 dioptre only.

May cause corneal scarring resulting in glare and reduced vision.

 



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