LASIK, short for ‘laser-assisted in situ keratomileusis’ is the most advanced, hassle free and common laser based eye surgery for treating farsightedness, nearsightedness and astigmatism. LASIK is pain free and takes 15 minutes to be performed on both eyes. The result is improved vision without contact lens or eyeglass and it takes place under 24 hours from surgery. Most importantly, you won’t have to feel shy of wearing glasses ever again. And of course, the option of wearing colored contact lenses for fashion reasons still remains as they do not require a prescription.
Doctors perform a thorough tests of patient’s eyes to be certain if they are healthy enough for the surgery. He will determine the pupil size, refractive errors(if there are any), thickness and shape of the cornea and the moistness of the eye. The doctor will make the exact map starting from the cornea to the retina using an automated instrument called corneal topographer. It basically measures the curvature of the surface of the cornea and starts making the map from the data. Combined with that patients undergo a wavefront analysis. Their eyes are subjected to different types of light at different intensities to detect any abnormality effecting the vision’s mechanism.
Procedure of LASIK surgery:
Similar to other refractive surgeries, LASIK reshapes the eye cornea in a way so that it can focus the entering light precisely on the retina for clear vision. This is the main objective of the whole surgery.
During the surgery numbing drops are applied to the eyes to relax them. Patient may be given other medications depending on their pre examination reports to be made comfortable. Next, the eyes are positioned under the laser emitter. An instrument known as the lid speculum is used to keep the eye lids open. The cornea is marked using ink marker. A suction ring is applied to the front to prevent any retinal movements or loss of contact which will in turn affect the overall flap quality.
After the flap is done creating the surgeon will fold back the hinged flap to access the underlying cornea. The laser is than positioned to pinpoint the cornea. This specialized laser uses a ultraviolet beam of ray to remove like microscopic amounts of tissue from the actual cornea so that it can focus light accurately to the retina. The temperature of the laser beam is very cool unlike conventional laser, so no heat is felt during the surgery. The laser pulses reshapes the cornea accordingly to the problem.
Right after the surgery temporary burns and itching maybe felt. The surgeon will perform a quick post operation test to determine if everything went smoothly. There maybe some haziness and blurred vision for the next 24 hours after the surgery. But it passes away after proper sleep and rest. Eye sight continues to improve and stabilize in 3-4 days usually.
LASIK can dramatically improve your vision and quality of life. Most people achieve 20/20 vision just after a few days from surgery. But some people achieve 20/40 people depending on their eye condition. You won’t have to use glasses in your daily activities, but incase you need the focus level will be much lower than usually required.