Refractive Surgery
Surgery to reduce dependence on or eliminate eyeglasses and contact lenses started in the 1950’s with an early form of radial keratotomy. While initial developments were slow, the past decade has witnessed a technical revolution of safer, more effective, and more accurate techniques.
The ideal refractive surgery would completely eliminate glasses and / or contact lenses, be reversible and with little or no risk for loss of vision. Although no current procedure can meet these goals, there are excellent techniques currently available that usually meet or exceed patient’s expectations.
The traditional RK (radial keratotomy) has been replaced with Laser Vision correction (LASIK, PRK, LASEK), Clear Lens Replacement, Phakic Intraocular Lens implants and CK (Conductive Keratoplasty). New techniques are constantly emerging
The most common popular procedures for Vision Correction today are LASIK, LASEK and PRK. All of these techniques use an excimer laser to change the curvature of the cornea. LASEK and PRK eliminate the need for the flap formed in LASIK surgery but are otherwise very similar to LASIK.
Intra-ocular Lens Implants similar to those used for cataract surgery are now used for vision correction. With these techniques the surgery moves from the cornea to the inside of the eye and the corneal curve is not changed. Instead an implant is either placed in front of the human crystalline lens (Phakic IOL) or the human lens is replaced with and implant (Clear Lens Replacement) in a procedure identical to cataract surgery.
Lens implant technology is evolving. In addition to ever-improving conventional intra-ocular lenses, optional lenses are now available that provide some bifocal effect or accommodation (the ability to change focus from far to near without the need for reading glasses or bifocals)