Lasik FAQ

Frequently Asked Questions.

Am I a candidate for LASIK?

If you are 18 or above, dissatisfied with your glasses or contact lenses and wish to get rid of them because of occupational or life style reasons, and meet certain visual and medical criteria, you are a candidate for LASIK. However, an examination by our LASIK experts can evaluate whether or not you are medically suited for LASIK.

What is Customised or wavefront LASIK?

This is a special form of LASIK in which the treatment parameters are customised for the particular patient, based not only on the refractive error, but also on the corneal map of the eye and other findings detected by special tests. This procedure tries to correct aberrations, maintains normal shape of the cornea and gives better night vision.

How does wavefront LASIK work?

Light falling on the cornea [the front surface of the eye] has a smooth curvature- referred to as a “wavefront”. As this smooth wavefront shape courses through the various optics of the eye, ocular aberrations [imperfections] are induced. It results in an irregular wavefront curvature reaching the retinal surface, which degrades the retinal image quality. An aberration-free eye would result in a smooth wavefront image on the retinal surface. Wavefront-guided customized LASIK, also referred to as “customized ablation” or custom LASIK performs corrections based on individual wavefront measurements.

Current refractive procedures such as traditional or standard LASIK correct lower order aberrations such as spherical and cylindrical numbers alone. However, higher order aberrations affect the quality of vision and may not significantly affect the vision as read on the chart. It is these subtle deviations from the ideal optical system, which can be corrected by wavefront procedures, and thereby improve image quality.

Is this the latest technology?

The latest and most reliable procedure is wavefront-guided LASIK, a customized treatment for each eye. Wavefront procedures even often leave patients with eyesight better than normal.

What is Excimer laser?

Excimer laser is Ultra Violet (UV) light energy of wavelength 193 microns. This laser breaks the chemical bonds within the molecules (photoablation) with minimal thermal damage to the surrounding tissues. Thus it is very precise and can remodel the cornea with an accuracy of more than a thousandth of a millimeter.

How does Excimer laser correct the refractive error?

The effect of excimer laser on the cornea is very similar to grinding of a glass lens to change its refractive power. In eyes with refractive errors, excimer laser because of its high level of precision, can change the shape of the cornea to change its refractive power to the desired state and thus correcting the refractive error.

How safe and successful Lasik is?

Yes. LASIK is completely safe. New generation Excimer lasers and advances in technique offer the highest degree of accuracy and utmost safety. Recent studies conducted internationally show it to be a very safe and effective procedure.
LASIK is a permanent treatment. Millions of patients worldwide have had an Excimer laser refractive procedure done on them successfully. During your consultation we will give you an idea of the procedure and the level of vision you can expect.

Will I experience pain during the procedure?

No. There is no pain during the procedure. There may be mild discomfort for a few hours after the procedure.

What kind of laser do we use?

Our Hospital offer the best and the latest technology. The Laser we use is Allegrato Eye Q 400 Hz.

Why Should You Consider the Allegretto Wave?


Perfect Pulse Technology accurately controls the energy level and placement of every laser pulse, enabled by an active eye tracker that reads eye movement 200 times per second.

Quality of Vision.

Wavefront-optimization customizes the treatment to each person’s
corneal curvature.


The Allegretto Wave is the fastest laser , treating one diopter of correction in only four seconds. In fact, the average total treatment time is just 10 seconds. Rapid treatment speed has been shown to increase predictability and reduce the incidence of complications