LASEK (Laser Epithelial Keratomileusis)

LASEK is a relatively new procedure that sits somewhere between LASIK and PRK. In LASEK, instead of using a microkeratome, a blade called a trephine is used. The trephine allows for the cutting of much thinner epithelium flap. This makes LASEK ideal for people whose corneas are too thin for LASIK.

LASEK is an outpatient procedure that takes about the same amount of time as LASIK. A topical anestetic is applied to the eye, then the trephine is used to create the epithelium flap. After the flap is made, the surgeon covers the eye with a dilute alcohol solution. The solution loosens the edges of the epithelium.

Ater the eye has been soaked for roughly thirty seconds, the doctor uses a tiny hoe to peel back the epithelium and fold it back so it is out of the way. At this point the doctor employs an excimer laser in much the same way as in LASIK or PRK, and molds the corneal tissue to the desired shape. After the shaping is finished, the surgeon replaces the epithelium flap.

The recovery time for LASEK is slightly longer than it is for LASIK, as it takes approxiametly four to seven days to recover good vision. The flap itself heals within a day, but the eye can still feel irritated for up to three days.

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