LASIK

Laser In-situ Keratomileusis (LASIK) is is an eye surgery done to correct nearsightedness, farsightedness, and astigmatism. LASIK was developed in the 1950s by Professor Jose I. Barraquer Moner.

Using the femtosecond laser energy, a very thin flap of tissue is created on the surface of the cornea (the front clear transparent part of the eye). It can also be mechanically created by the use of a special blade known as microkeratome. Femtosecond laser is preferred over microkeratome (although economical to use) for its precision and lack of potential complications. The partly attached flap is lifted to expose the bed of cornea known as stroma, and then it is lasered with second ultraviolet laser (excimer laser) to precisely remove the amount of tissue needed to correct the refractive error. There is no actual burning and the tissue is vapourised by a cold process. The amount of tissue needed to be lasered is calculated by the assessment based on your refractive error and ocular anatomy. The flap is then replaced in it is original position which starts to heal instantaneously. Usually within a few hours, the surface layer or corneal epithelium starts to grow to seal the flap. Antibiotic and anti-inflammatory eye drops are used after the procedure as advised by your surgeon.