What is LASIK laser eye surgery?
LASIK, sometimes referred to as laser eye surgery or laser vision correction, is the most common refractive procedure performed to correct short-sightedness (myopia), long-sightedness (hyperopia) and astigmatism. LASIK stands for “laser in-situ keratomileusis” and is a technique that uses a femtosecond laser to create a thin flap on the front surface of the cornea, beneath which excimer laser ablation is applied to re-shape the cornea, correcting for your refractive error. LASIK is the most popular laser vision correction procedure performed today because it causes minimal discomfort and very little downtime. Visual recovery is very rapid, allowing you to return to your normal activities almost immediately.
How does LASIK work?
LASIK works by using an excimer laser to remove corneal tissue in an extremely precise fashion. This changes the curvature of the cornea, and hence the focus of the eye. In myopia, the cornea is made flatter, allowing light to focus on the retina instead of in front of it. In hyperopia, the cornea is made steeper, shifting the focus of the light on the retina instead of behind it. For astigmatism, the cornea is made more spherical, allowing light to focus on a single point on the retina instead of having multiple points of focus. This improved focus of the eye means that you can now see clearly without the need for glasses or contact lenses.
How do I know if I am suitable for LASIK?
To be a suitable candidate for LASIK laser vision correction, you should:
There are limits as to how much myopia, hyperopia and astigmatism that can be corrected with LASIK eye correction, and this largely depends on the thickness of your cornea. This can only be determined at your laser eye surgery assessment.
To determine your suitability for LASIK laser eye treatment, you will need to come in for a detailed assessment. At this visit, you will first see our optometrist who will perform tests to determine your refraction, corneal shape, thickness and other corneal parameters. This is followed by a consultation with Dr Goh where the health of your eyes will be assessed, and the results of these tests will be reviewed and discussed in detail with you.
How is LASIK performed?
A thin corneal flap first is created with a femtosecond laser.
The flap is then gently lifted and folded over to expose the underlying cornea.
The Schwind Amaris 1050RS excimer laser precisely re-shapes the exposed cornea, correcting for your refractive error.
Finally, the flap is put back in its original position where it re-adheres naturally to the underlying corneal tissue.