LASIK has become one of the most popular elective procedures in the world. Over 5 million people have undergone LASIK in North America over the last 15 years! People are choosing LASIK to free themselves from glasses and contacts and regain an active lifestyle.
LASIK is a form of corrective eye surgery in which the surgeon creates a thin flap of corneal tissue with a precise flap-making instrument, called a microkeratome. This flap is gently laid back, exposing the cornea.
The surgeon then uses a state-of-the-art excimer laser to remove a pre-determined amount of corneal tissue from the exposed bed of the cornea. The amount of tissue to be removed is calculated based on the pre-operative determination of the power of your eye. These measurements are precisely calculated in advance by Dr. Simone personally.
The flap is replaced and within minutes natural forces hold the flap down on the cornea. Within a few hours, the surface layer of the cornea (epithelium) begins to grow over the cut edge of the flap to seal it into position. Within days, collagen bonds form within the cornea around the edge of the flap, permanently sealing it.
LASIK can be used to correct nearsightedness (myopia) farsightedness (hyperopia), and astigmatism.
LASEK (laser epithelial keratomileusis) is a variation on the techniques for PRK and LASIK. Also called epithelial LASIK or E-LASIK, LASEK is ideally used for people with corneas that are too thin or too flat for LASIK. It decreases the chance of complications that can occur when making the flap during LASIK when the cornea is not the ideal thickness.
In LASEK, the epithelium, or outer layer of the cornea, is removed using finer blade called a trephine instead of the microkeratome used in LASIK. The surgeon then covers the eye with an alcohol solution (perhaps one part alcohol and four parts sterile water) for around 30 seconds. The solution loosens the edges of the epithelium.
After removing the alcohol solution from the eye, the surgeon then lifts the edge of the epithelial flap and folds it back similar to LASIK. Then he or she uses an excimer laser to reshape the corneal tissue underneath. Afterward, the epithelial flap is placed back on the eye.
Then a bandage contact lens is put into the eye to allow the flap edges to heal. As in PRK the bandage contact lens is worn for about three days. You may feel eye irritation during the first day or two afterward. The vision will take a longer time to recover compared to LASIK, but will recover faster than PRK, usually about four to seven days. The patient will need to use drops (topical steroid) drops for a few weeks after the treatment to control healing rate.
The vision results with LASEK are very similar to LASIK, however, the time it takes to achieve full clarity may be longer than LASIK.
PRK is a form of corrective eye surgery in which a surgeon removes the surface layer of the cornea (called the epithelium) and then reshapes the corneal bed with the laser in the same way as LASIK. This technique is usually used for people whose cornea may be too thin to safely allow for the creation of the corneal flap required for LASIK.
The procedure is used to correct nearsightedness (myopia), farsightedness (hyperopia), and astigmatism.