LASIK (laser-assisted in-situ keratomileusis) surgery can be called as the alternative to glasses or contact lenses; the surgery is done to correct a certain vision problem.

Lasik Eye Surgery

It is a type of laser refractive surgery that is best known and most commonly performed. For the surgery a very special type of cutting laser is used to exactly cut and change the shape of your cornea, then a dome-shaped tissue is placed at the front of the eye to improve your vision.

The images are clearly focused on the retina in the back of the eye as the light rays are bent properly to contact the surface of the retina.

With hyperopia, astigmatism or myopia, the light is bent incorrectly and ends up focused elsewhere, resulting from blurred vision. The blurred vision is fixed by bending the light rays with correction glasses or contact lenses. But reshaping the cornea will give the exact vision with right colors.

Why Is It Done?

This surgery is done to correct some one’s vision problem such as :

Farsightedness (Hyperopia) :

If you have a smaller eyeball than the average ones or you have a cornea that is too flat, then the light focuses at the back of your retina instead of focusing at the front of it. This makes near vision very clear and distant vision very blurry.

Nearsightedness (Myopia) :

If your eyeball is a little longer than the natural one or the cornea curves too sharply, light rays focus on the front surface of the retina and blur distant vision. You will be able to see the things that are close to your retina but you can’t see the objects that are kept far from your retina.

Astigmatism:

Astigmatism causes both near and far visions very blurry and unclear as the cornea curves are very flat and disrupt the focus.

If you are thinking for a LASIK eye surgery, you probably already wear contact lenses or power glasses. Seek advice from your eye doctor before you make a commitment. The doctor will then decide what procedure will work on you the best.

Lasik Eye Surgery Procedure

Lasik Eye Surgery Procedure

In Lasik eye surgery a medical instrument called microkeratome or femtosecond laser is used to generate a flap in the cornea. This flap is then peeled back, the corneal tissue is realigned to be able to focus light accurately and then the flap is placed back into its original position. Local anesthesia given in the form of eye drops and the surgery can be completed in a time span as short as 10 minutes.

Recovery

The numbing effect wears off in half an hour and most patients return to work the next day or within a couple of days. It takes around 3 to 6 months for a patient to complete recovery from the surgery. Immediately after the surgery, the eyes can feel dry, blurry vision and halos in the night. Vision will improve within a few days. One might also feel minor pain following the surgery, which will subside with time. The doctor will schedule a follow-up appointment a couple of days after the surgery to check up on the healing speed and any possible complications.
Other follow up appointments will also be scheduled by the doctor for the next 6 months to be careful and keep an eye on the healing process so everything goes properly. Consult the doctor before resuming vigorous physical activity or strenuous activities for the eyes.

Risks

  • Undercorrection – If too less tissue is removed by the laser resulting in unclear vision. It is more common in nearsighted patients. Another surgery may be required to remove more tissue.
  • Overcorrection – If the excess tissue is removed it creates a bigger problem that is harder to fix than under correction.
  • Astigmatism – Uneven tissue removal can cause the condition and can be fixed by surgery or corrective lenses.
  • Flap Problems – Folding or removal of corneal flap can cause complications like infection and excessive tears.
  • Vision Loss – In very rare cases surgical complications can lead to loss of vision. Some people might not get an as sharp vision as earlier.

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