Articles: PDF OnlyTreatment of myopic astigmatism with the 193 nm excimer laser utilizing aperture elementsSpigelman, Alan V. M.D.1; Albert, William C. M.D.; Cozean, Charles H. M.D.; Johnson, Donald G. M.D.; McDonnell, Peter J. M.D.*; Pender, Paul M. M.D.; Shimmick, John M.S.Author Information 1Reprint requests to Alan V. Spigelman, M.D., 29275 Northwestern Highway, Southfield, Michigan 48034. *Dr. McDonnell is a Research to Prevent Blindness William and Mary Greve International Research Scholar. Presented in part at the 3rd American-International Congress on Cataract, IOL and Refractive Surgery, Seattle, May 1993. Journal of Cataract & Refractive Surgery: March 1994 - Volume 20 - Issue - p 258-261 doi: 10.1016/S0886-3350(13)80763-8 Buy Metrics Abstract In this paper, we examine the 193 nm excimer laser's efficacy and safety in treating myopic astigmatism. The VISX Twenty/Twenty excimer laser uses aperture elements to effect astigmatic photorefractive keratectomy. In 70 patients with six months follow-up, the average postoperative sphere was -0.14 and the average postoperative cylinder was -0.54. Seventy-one percent of these patients had uncorrected visual acuity of 20/40 or better at six months. In 12 patients with one year follow-up, the average postoperative sphere was -0.05 and the average postoperative cylinder was -0.59. Eighty-three percent of these patients had uncorrected acuities of 20/40 or better; none had a clinically significant loss of best corrected acuity. This investigation demonstrates that the excimer laser can be used to treat myopic astigmatism successfully. © Williams & Wilkins 1994. All Rights Reserved.