主题：有谁做过激光矫视 -- 潜水英雄

LAS VEGAS, Nov 12, A 10 year study of patients who received Lasik and PRK to reduce nearsightedness and astigmatism shows long term stability and safety of laser eye surgery to reduce the need for glasses. The study was presented by Jorge Alio, MD, PhD at the joint annual meeting of the American Academy of Ophthalmology.

The study did not include results from wavefront-guided Lasik, an advanced laser treatment technology not available in 1995 and 1996 when the study group received surgery.

One hundred eyes were corrected with Lasik plus 100 were corrected with PRK, a similar procedure that also uses an excimer laser to reshape the cornea (clear front of the eye). The researchers measured each patient's vision repeatedly through the following 10 years and evaluated changes on the cornea, which reflects the stability of the procedures.

On average, ten years after Lasik and PRK, patients read the line on the familiar "Big E" eye chart immediately above what they could read at the time of surgery, indicating a small regression of effect that may be affected by age related issues.

Jorge Alio, MD, PhD is professor and chairman of ophthalmology at the Miguel Hernandez University in Alicante Spain.