What is LASIK?

LASIK is short for “laser-assisted in-situ keratomileusis”. It is a simple procedure that uses laser to reshape the cornea in order to change the focal point of the eye.

How does LASIK work?
There are basically 3 parts to LASIK:

1. Creating the flap
2. Laser correction
3. Closing the flap

Part I: Creating the flap A microkeratome or laser (Intralase) is used to create a “flap” on the outer corneal tissue. The “flap” can be folded away to expose the central part of the cornea to be reshaped.

Part II: Laser correction Excimer laser is used to reshape the cornea.

Part III: Closing the flap The “flap” is replaced over the reshaped cornea and the eye is allowed to heal on its own.

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For myopic patients, LASIK removes a thin layer of the central cornea. The central cornea is flattened and the eye is able to see far objects better.

Pre-LASIK myopia

LASIK flattens the cornea and the focal point is now on the retina,   giving better vision.

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For hypermaetropic patients, LASIK creates a circular ditch in the periphery cornea. The central cornea becomes more curved and the eye is able to see near objects better.

Pre-LASIK hypermaetropia

Making the cornea more curved brings the image forward and into   better focus.

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