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Vision correction through Excimer Laser Surgery

The Excimer Laser is a unique type of "cold" laser that does not burn or cut tissue. Instead, it gently breaks the molecular bonds between the cells so that controlled amounts of tissue can be literally vaporized away, one microscopic layer at a time

Laser-assisted in situ Keratomileusis (LASIK)
The current technique involves the use of 193 nm UV light laser surgery to correct nearsightedness, farsightedness and astigmatism. In performing LASIK, the surgeon first uses a special oscillating blade to make a partial cut through one fourth to one third of the front surface of the cornea, creating a flap of clear tissue on the central part of the eye. The patient is then positioned under the excimer laser, which is programmed to vaporize some of the internal corneal tissue under the flap.
The Procedure

Each patient goes through a comprehensive series of eye tests and examinations (including Corneal Topography, Pachymetry and Wavefront analysis) before consulting with the surgeon to discuss and plan the specifics of personal vision correction. To ensure a painless experience the eye is anaesthetized with drops (No injections are necessary). For the surgery, the patient lies under the laser machine and concentrates on a flashing light for a few seconds. The patients are in the surgery suite for about 15-20 minutes and can walk away after the surgery. No hospitalization is required. In LASIK, both the eyes are generally operated at the same time; no patch is applied post-operatively. However, if you so desire, you may undergo the procedure one eye at a time.

1 Are both eyes treated at the same time?

Literature has shown that LASIK is an extremely safe procedure and sight threatening complications are rare. Patients normally prefer to have both eyes treated at one sitting and get back to work faster. This practice is followed world wide. However if the patient feels more comfortable getting only one eye treated at each session, this can be done without any additional cost to the patient.

2 Will my number get fully corrected at the time of LASIK?
The laser is set so as to reshape your cornea to eliminate your number completely. However during the healing process the eyes of each person may heal slightly differently. Thus it is possible that you may have a small residual number. Usually this does not make it necessary for you to wear glasses for routine work.
3 Are the results of the Lasik procedure permanent?
The correction of vision done by LASIK is permanent. However LASIK has no effect on the natural progression of your number. This is why we only perform LASIK in patients whose number has been stable for at least one year.
4 If required, can LASIK be performed again?
If the objectives of visual correction are not met with in the first surgery, a second, or enhancement procedure can usually be performed to provide additional correction. Most people do not require additional surgery, but the higher the amount of correction necessary, the greater is the possibility of needing an enhancement procedure. The surgeon and the patient together assess this need and make the decision about further surgery.
5 Will I require reading glasses?


After LASIK surgery you will be able to see all distant objects clearly. Since LASIK cannot arrest the normal aging process of the body, you may require glasses for reading at around 40-45 years. Sometimes it may be possible to correct one eye for distance and the other eye for near vision if you so desire. This is called monovision.
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