LASIK (laser in situ keratomileusis) is an outpatient refractive surgery procedure used to treat nearsightedness, farsightedness, and astigmatism. With LASIK, the ophthalmologist (your eye doctor) uses a laser to create a thin flap in the cornea—the clear, round dome at the front of the eye. The surgeon then folds back the flap and reshapes the cornea using a preprogrammed excimer laser. Finally the flap is laid back in the original position and recovers in place. The procedure is done to improve the way the eye focuses light rays onto the retina at the back of the eye, thus allowing for better vision.
There are many misconceptions that Lasik is a cure for myopia (nearsightedness). The fact is, Lasik is just a refractive procedure which is used to remove the need for glasses wearing and contact lenses use. Sadly but true, the internal structure of the eye remains unchanged. That is to say, a thinned-out retina from high myopia will remain just as thin after Lasik surgery. Thus, plainly enough, the risks of any eye conditions associated with myopia will still remain, even after surgery. And the same theory applies to presbyopia (farsightedness). To further elaborate, though not at all pleasing, if you are nearsighted, after Lasik you may still develop presbyopia (farsightedness) as you age, and you will need reading glasses to correct your vision; it may also mean you will need reading glasses at an earlier age than had you not had Lasik.
The above fact might not sound encouraging, but do bear in mind Lasik is a refractive surgery procedure and any surgery procedures have risks and shortcomings. An alternative way to look at it is that it edits your life with a carefully done and highly-advanced procedure to bring you back the long gone vision acuity. However, not everyone is suitable for Lasik, check out the list below:
The patient should plan to have someone take/drive him or her back home and rest for the rest of the day. Remember avoid rubbing the eyes. To help protect the cornea as it heals, the surgeon may place a transparent shield over the eye(s) to protect against accidental bumps and to remind the patient not to rub the eye(s). The patient may need to wear the shield only when sleeping. The surgeon will provide eyedrops to help the eye heal and relieve dryness.