There are three main types of Laser Eye Surgery:
PRK (Photo Refractive Keratectomy) has been the standard eye laser surgery for many years.
It involves the complete removal of the epithelium or the outer layer of cells on the eye, with the use of a "cold" laser light.
PRK is mostly used on patients with low to moderate amounts of Myopia Astigmatism.
Below you can watch a video showing a PRK surgical intervention:
LASEK (Laser Assisted Sub-Epithelial Keratectomy) or EPIFLAP (Laser Assisted Epithelial Keratomileusis) surgery involves the fractional removal of the epithelium to reveal the cornea, which is then firmed or reshaped by a laser. The outer layer of cells is then pushed back, and the eye heals shortly after.
LASEK is used on patients with low to moderate amounts of Myopia or Astigmatism.
Below you can watch a video showing a LASEK surgical intervention:
LASIK (Laser Assisted in Situ Keratomileusis) is the newest and most popular type of eye laser surgery. Initially developed by Spanish ophthalmologist José Barraquer, with this procedure a thin layer of the eye's cornea is sliced off to create a flap. This enables the laser to target the tissue underneath. The flap is simply replaced and grows back naturally. Vision is restored almost immediately.
LASIK is usually used on patients with severe Myopia (nearsightedness): -0.75 diopters to 10.0 diopters.
Below you can watch a video showing a LASIK surgical intervention:
Source:
http://lasertherapeutic.blogspot.com
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