A Mayo Clinic study comparing femtosecond (bladeless) and mechanical microkeratome LASIK surgeries has found equal results from both types six months post-surgery, using a variety of vision and eye health measurements. The studys findings will be presented next week in three abstracts at the Association for Research in Vision and Ophthalmology meeting in Fort Lauderdale, Fla.
LASIK (Laser-assisted in situ keratomileusis) involves treating nearsightedness, farsightedness or astigmatism by reshaping the eyes cornea to alter the way the eye refracts light. LASIK involves creating a flap, removing a defined amount of corneal tissue by an excimer laser, and replacing the flap. In standard LASIK with a mechanical microkeratome, the flap is created by a blade; in bladeless LASIK, the newer type, the flap is created by a femtosecond laser.
"At six months after surgery, there are no differences between the eyes that had bladeless or microkeratome LASIK with respect to visual acuity (vision as measured by reading an eye chart), contrast sensitivity (ability to discriminate bright objects from dark objects), or in perception of stray light or glare, such as the glare from oncoming headlights," says Sanjay Patel, M.D., Mayo Clinic ophthalmologist and study investigator.
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