laser-assisted in-situ keratomileusis or LASIK is a procedure that corrects certain vision problems, eliminating or reducing the need for corrective lenses or eyeglasses.
This is the most common type of refractive surgery and this changes the shape of the dome-shaped transparent tissue or cornea at the front of your eye.
To refractor to bend light rays to focus more precisely on your retina rather than at some point beyond or short of your retina and to produce sharper and clearer vision is the main goals of LASIK eye surgery.
2 Reasons for Procedure
Here are the most common reasons to undergo a LASIK eye surgery.
This surgery might be an option for you if you have one of the following vision problems such as:
Farsightedness (hyperopia) – this makes distant and near vision blurry, the light focuses behind the retina instead of on it since you have a shorter than average eyeball or your cornea is too flat.
Nearsightedness (myopia) – this is when light rays focus in front of the retina and blur distant vision because your eyeball is slightly longer than normal or your cornea curves too sharply resulting to seeing objects that are close more clearly but not the things that are far away.
Astigmatism – this disrupts the focus of distant and near vision because the cornea flattens or curves unevenly.
Before you turn to LASIK eye surgery or another similar refractive procedure, your eye doctor will likely recommend that you try other ways of correcting your vision, such as by using glasses or contact lenses.
Some of the possible risks of LASIK eye surgery include:
Overcorrection – this is more difficult to fix than under correction and this happens when the laser will remove too much tissue from your eye.
Under correction – you will not get a clearer vision if the laser removes too little tissue from your eye and you might undergo another refractive surgery or enhancement surgery within a year.
Visual changes or loss – due to surgical complications you may lose your vision or you might not see clearly or sharply but this is very rare.
Vision returning to pre-surgery vision – your vision may return to the level of it before you had surgery because of abnormal wound healing, pregnancy or hormonal imbalances.
Glare, halos and double vision – you may experience difficulty seeing at night as well as halos, glare, double and bright lights.
Astigmatism – this may require additional surgery, contact lenses or glasses and this is the cause of uneven tissue removal.
Dry eyes – your eyes might feel unusually dry while they heal for the first six months after surgery leading to reduce the quality of vision. To prevent tears from draining away from the surface of your eyes you could ask your doctor if you can have another procedure wherein you will get special plugs put in your tear ducts.
Flap problems – the epithelium may grow abnormally underneath the flap so this can lead to complications such as excess tears, inflammation, and infection.
There are certain conditions where LASIK is not an option and these are:
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