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:
- Creating the flap
- Laser correction
- 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.
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.
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.