With the technological advancements today, people with visual problems go for the popular laser surgery to improve their eyesight. One of the commonly used operations in laser surgery is the LASIK. LASIK means laser-assisted in situ keratomileusis and this widely popular procedure is used to restore the normal vision of those who are experiencing myopia, hyperopia and astigmatism.
The LASIK procedure reshapes the cornea so that light entering the eye will be properly focused giving the eyes a clearer vision. Most LASIK procedures take about 15 minutes for both eyes. The resulting improved vision will be felt by patients within 24 hours.
Things to consider before undergoing LASIK surgery
Before you undergo the LASIK surgery, your doctor will have to ensure that you are a good candidate for the operation. He will perform initial tests like evaluating the thickness of your cornea, determining the size of your pupil and examining if you have other eye conditions or diseases.
Most doctors use the instrument called the corneal topographer in order to determine how the front surface of your eye has curved.
Some patients also undergo the wavefront analysis. The wavefront technology sends light waves to the patient’s eye in order to determine the degree of aberration of the patient’s vision.
Performing the LASIK eye surgery
The surgeon first creates a thin and circular flap in the patient’s cornea. The surgeon will either use a surgical tool called the microkertome or the afemtosecond laser. After this procedure, the surgeon will fold back the flap in order access the cornea. He then removes some of the tissues in the cornea by using an excimer laser.
The excimer laser is a highly advanced laser that makes use of ultraviolet light beam in order to ablate the very tiny tissues from the cornea. Once the tissues are removed, the cornea is now reshaped in such a way that light can be clearly focused on the retina thus improving the vision of the patient.
For patients that are nearsighted, the main objective of the operation is to flatten the cornea. On the other hand, with farsighted patients, the LASIK surgery will steepen the cornea.
Astigmatism can also be treated through LASIK. The excimer lasers will smoothen the irregular cornea.
After the cornea is reshaped with the help of the laser, the flap is then placed on the area where the corneal tissue was removed. Following these procedures, the cornea is allowed to heal.