Inland Eye Specialists

Description

LASIK (Laser Assisted in-Situ Keratomileusis) and PRK (Photo-Refractive Keratectomy) are two of the most common forms of laser vision correction (LVC). Both procedures use the excimer laser to reshape the corneal curvature. Reshaping the corneal surface allows the light to properly focus on the retina (as with glasses and contacts), providing clear vision. Laser eye surgery is becoming increasingly popular as people with vision problems are discovering how much it can change their lives. What are the goals of Laser Vision Correction surgery? The goals of surgery are to reduce the need for glasses and contact lenses, allowing patients to go about their daily routine without needing corrective lenses. Our surgeons personally discuss with each patient their individual needs and expectations. LVC may also be used to treat residual amounts of nearsightedness (myopia), or farsightedness (hyperopia) following other forms of refractive and cataract surgery. What is the difference between LASIK and PRK? With LASIK, the cornea is treated by first using an instrument called a microkeratome to create a corneal flap. The laser is then used to reshape the central cornea underneath the flap. With PRK, the laser is used to directly treat the front surface of the eye. Both procedures can be used to correct nearsightedness, farsightedness, and astigmatism. PRK has been performed in this country since 1988, and LASIK since 1991. During your consultation, our surgeons will discuss the advantages and disadvantages of each procedure which may vary depending on the individual. How is the LASIK procedure performed? The eyes are first anesthetized with drops and the surrounding area cleaned. Inadvertent blinking is prevented by using a lid speculum. The patient is asked to focus on a red blinking light. The corneal flap is created with the microkeratome and folded back. The laser is then used to vaporize a very thin layer of corneal tissue (0.2 microns per pulse) in a pattern customized to the patient's prescription. The corneal flap is then reflected back into position and medicated drops are applied. Surgery takes only a few minutes. Typically a protective eye shield is worn over the eye for the first day. What if LASIK is not the best procedure for me? During your examination, we gather important information regarding the health of your eye. The surgeon expertly measures your prescription as well as the shape and thickness of your cornea. Our goal is to help you select the procedure that will have the highest chance of achieving clear vision, while minimizing complications. Some patients have corneas that are thinner than average, and may not allow enough tissue to fully and safely treat their full prescription with LASIK. Patients with thinner corneas can often be treated with PRK. This procedure does not require a corneal flap, providing more corneal tissue for treatment. How is PRK surgery performed? Your eye is anesthetized with eye drops. The outermost layer of the cornea is removed with the laser, or mechanically with a special instrument. The laser is then used to remove a thin layer of corneal tissue similar to LASIK.

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