Laser Vision Correction (LVC) Surgeries
When it comes to laser vision correction surgery, it’s important to know what your options are. An LVC procedure is usually performed to correct one of three vision problems: myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. In nearsightedness, laser surgery is used to flatten the cornea. In farsightedness, laser surgery is used to steepen the cornea. If you have astigmatism, then your cornea has both areas that need to be steepened and flattened. LVC surgeries include PRK, LASIK, and LASEK.
PRK
Photorefractive Keratectomy (PRK) involves the use of an excimer laser to shave the corneal surface, changing its shape and thereby correcting myopia, hyperopia, or astigmatism. It is very accurate and the success rate is extremely high. This is especially true for patients with low to moderate levels of myopia (nearsightedness). Some patients experience discomfort or pain for a day or two after PRK, but this can be controlled with medication.
Good vision is usually achieved within one to three weeks.
LASIK
Laser In-Situ Keratomileusis (LASIK) also utilizes an excimer laser to flatten or steepen the cornea. However, with LASIK the flattening is accomplished within the cornea (not on the corneal surface.) In order to do this, the surgeon first creates a corneal flap, lifts the flap, and applies laser treatment to the inner layers of the cornea. The flap is then replaced in its previous location and recovery of vision is usually very rapid and painless. Because of this, LASIK is preferred over PRK for LVC for most but certainly not all patients.
The recovery of vision after LASIK is truly remarkable. The vast majority of patients whom we have treated have been able to see so clearly that they could drive without glasses and return to normal activities, including work, in less than 24 hours. In fact, most of our patients achieve 20/20 vision, or so close to it that they cannot tell the difference, within a few days after LASIK.
You can read more about what to expect before, during, and after LASIK here.
LASEK
LASEK is an LVC procedure with similarities to both PRK and LASIK. Unlike LASIK, a corneal flap is not made with LASEK. Instead, a special technique is used to separate the cells from the surface of the cornea and the cells are then moved to the side. The excimer laser treatment is performed and the cells are then returned to their original location (with PRK these cells are completely removed and must regenerate.) However, LASEK is not often performed because most studies have failed to demonstrate any advantages over PRK.
Laser vision correction eye surgery can be performed in many different ways, depending on your individual eyesight challenges. At Mackool Eye Surgery in Astoria, NY, we perform LVC procedures often in order to help our patients see more clearly. To learn more or schedule an appointment, call us today at 718-728-3400.