How Lasik works
Lasik is a procedure that modifies the curvature of the cornea (which behaves like an optic lens) in order to flatten it (less powerful) with nearsighted patients, more bent (more powerful) with long-sighted patients and more spherical with astigmatic patients (since astigmatic patients have irregularities in the curvature of their cornea).
The procedure is performed in two stages. First, a thin flap of the cornea is created with the use of a femtosecond laser or a mechanical microkeratome. This flap, which is still attached to the eye, is lifted up to allow in the second stage of the procedure the laser to work on deep layers of the cornea. The amount of laser applied is programmed depending on the visual defect. The flap is then repositioned and the eye will heal without the need for sutures.
When to get Lasik?
As soon as the visual defect has stabilized, which rarely happens before the age of 21.
Two identical eye exams separated from at least a year are thus recommended to insure that the visual defect doesn’t progress with time. There is no age limit to get the procedure besides that. Patients older than 40 can undergo the eye surgery in Tunisia, even if their nearsightedness is still progressing.
Often, patients can tolerate contact lenses because of a dry eye problem or an allergy. People also get fed up with their glasses, especially with nearsighted patients who has to use progressive lenses.
Glasses and lenses are also problematic with sports. Some people just get the procedure to access certain professions that require a good visual acuity.