For many years, refractive disorders have been treated through the use of surgery.

Refractive disorders are known defects of visual gradation, such as myopia, hyperopia, astigmatism and asthenopia.

In recent years, with the advent of the excimer laser, there has been significant progress, making refractive surgery both more accurate and safer.

The argon-fluoride excimer laser of 193 nm is a pulsating laser with great potential, as it allows for the creation of very accurate and precise excisions of the corneal tissue, to the exact depth and with minimum effect on the surrounding tissue.

We use the latest generation of lasers in our clinics in order to treat our patients with the greatest of safety.

Laser-assisted keratomileusis surgery, or LASIK, is a technique that consists of the modification of the corneal curvature through the use of a laser, breaking the molecular bonds that exist between different cells without altering the state of the cells.

The shape, size and depth of the excision depend on the type of defect that is being corrected. For example, for myopia the treatment is circular; for hyperopia it is in the shape of a ring; and for astigmatism it takes an elliptical or butterfly shape, as seen in the drawing.

Patients older than 18 and with a stable refractive defect may undergo the surgery. In all cases, the patient must pass the various preoperative exams in order to determine if ocular problems are present that would make the surgery unadvisable.

The surgery takes 5 minutes for each eye, is done on an outpatient basis and requires only anesthetic eye drops.

This treatment is completely painless and visual recovery is rapid. Within 24 hours, the patient may return to their normal life. The treatment is permanent; the defect will never return.

If the defect is significant, intraocular lenses appropriate to the type of defect (myopia, hyperopia or astigmatism) may be implanted.

This technique consists of the introduction of a lens into the inner eyeball with the exact refractive correction necessary to obtain a perfect correction. This lens is fixed; it does not need to be changed with the passing of the years.

The procedure only requires the use of a topical anesthetic (eye drops). Both eyes are operated on at the same time and the patient leaves the operating room with both eyes open. This treatment does not require hospitalization.