I HAD PRK IN 1993 AT THE OPTIMAX LONDON CLINIC AND THEN LATER AT THEIR BRISTOL CLINIC. MY ORIGINAL PRESCRIPTION WAS -6.5 IN BOTH EYES.DUE TO REGRESSION AFTER PRK I HAD RETREATMENTS ON BOTH EYES, THE LAST OPERATION BEING IN MAY 1996. MY PRESCRIPTION IS NOW -.25 SPHERE 1.75 CYL RIGHT EYE -.25 SPHERE -.50 CYL LEFT EYE. FROM THE OUTSET OPTIMAX INFORMED ME THAT MY CHANCES OF COMPLETELY THROWING AWAY MY GLASSES WERE AROUND 60% AND ON THE WHOLE I AM QUITE PLEASED WITH THE RESULT. MY VISION HAS BEEN STABLE SINCE 1997 AND I HAVE NO PROBLEMS WITH MY VISION. ALTHOUGH THE HAZE ON BOTH EYES HAS COMPLETLEY CLEARED IT TOOK AROUND 4 YEARS WHICH IS A LOT LONGER THAN THE DOCTORS SUGGEST. I HAVE COME ACROSS WEB SITES WHICH SAY 4 YEARS IS WHAT IT TAKES FOR THE CORNEA TO FULLY HEAL.ALTHOUGH IT IS NATURAL TO FEEL WORRIED ABOUT THE SYMPTOMS AFTER PRK YOU MUST REMEMBER THAT IT TAKES TIME FOR THEM TO SUBSIDE. AS IT IS NOW OVER 6 YEARS SINCE MY PRK I HAVE NO DOUBT THAT THINGS HAVE MUCH IMPROVED. I HAVE COME ACROSS A WEB SITE WHICH WARNS OF THE DANGERS OF LASIK http://www.LASIKdisaster.com/