LASIK surgery is safe and effective, but for those who are uncertain about getting the procedure, these statistics may help: 95% of people are satisfied with their outcome, and 90% end up with 20/20 vision or better. Dr. Eduardo Besser has extensive experience performing customized, all-laser LASIK surgery, helping patients restore their vision and eliminating the need for most eyeglass prescriptions. To learn whether you’re a good candidate for LASIK surgery, call Dr. Besser’s office, located in the heart of Culver City, California, or book an eye examination online.
Laser in-situ keratomileusis (LASIK) is a type of refractive surgery that restores the cornea’s ability to focus light accurately. The laser precisely reshapes the cornea by removing microscopic layers and smoothing irregularities.
The cornea, a transparent dome covering the front of the eye, protects the eye, screens out ultraviolet light, and refracts light so it properly focuses on the lens. Corneal refraction contributes about 65-75% of the eye’s focusing power, using its symmetric shape to bend light evenly no matter where it first hits the eye.
Refractive errors occur when the shape, smoothness, or transparency changes, but they most often develop when the cornea is not evenly curved. Astigmatism, for example, develops when the cornea is more elongated.
Dr. Besser performs LASIK surgery to treat:
Nearsightedness (difficulty seeing objects in the distance) develops when the cornea’s curve is too steep, causing light to focus in front of the retina. LASIK restores vision by reducing the curvature.
Farsightedness (difficulty seeing nearby objects) occurs when light focuses beyond the retina due to a flat cornea. LASIK reshapes the cornea to produce a steeper, symmetrical curve that focuses light directly onto the retina.
With astigmatism, near and distant images appear blurry and distorted because an irregularly shaped cornea scatters the light. Light may focus in front of the retina, behind it, or both. LASIK surgery selectively reshapes portions of the cornea to make it smooth and symmetrical.
To perform a LASIK procedure, Dr. Besser first creates a thin flap in the cornea, separating the upper layer, then folding it back to access inner corneal tissues. He uses a state-of-the-art femtosecond laser to create the flap rather than a microkeratome, the standard mechanical device.
The femtosecond laser has an advantage over the microkeratome because it ensures a precise, thin, and uniform flap thickness, which in turn preserves the proper thickness of the underlying cornea.
Cornea reshaping is performed using an excimer laser to ablate the inner corneal tissues. Dr. Besser customizes the procedure using wavefront technology that measures hundreds of reference points on the surface of the eye, then calculates the precise reshaping required to improve refractive errors.
When the procedure is over, Dr. Besser replaces the flap over the cornea, which promotes healing. Refractive stabilization may take three months, depending on the extent of the surgery.