Articles: PDF OnlyPhotoastigmatic refractive keratectomy in 168 eyes: Six-month resultsKim, Yong J. M.D.*; Sohn, Joonhong M.D.; Tchah, Hungwon M.D.; Lee, Choon O. M.D.Author Information The Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea *Reprint requests to Yong J. Kim, M.D., Ulsan University College of Medicine, Asan Medical Center, Department of Ophthalmology, 388-1 Poongnab-Doug, Song pa-Ku, Seoul, 138-040, Korea. Presented at the 3rd American-International Congress on Cataract, IOL and Refractive Surgery, Seattle, May 1993. Journal of Cataract & Refractive Surgery: July 1994 - Volume 20 - Issue 4 - p 387-391 doi: 10.1016/S0886-3350(13)80172-1 Free Metrics Abstract Using a 193 nm excimer laser, we performed elliptical astigmatic and spherical corneal ablation on 168 eyes with compound myopic astigmatism and analyzed the three- and six-month postoperative results. Mean preoperative astigmatism was 1.51 ± 0.81 diopters (D). Mean three- and six-month postoperative astigmatism was 0.70 ± 0.58 D and 0.67 ± 0.60 D, respectively. Six months after surgery, eyes with less than 1.00 D preoperative astigmatism improved 4.8%. The improvement was 53.5% and 59.1 % for eyes with a preoperative astigmatism of 1.00 D to 2.00 D and above 3.00 D, respectively. Overall, astigmatism improved 55.6%. There was a wide distribution from overcorrection to undercorrection. Astigmatism six months after surgery was within 10 degrees of the preoperative axis in 46.1 % of eyes. © Williams & Wilkins 1994. All Rights Reserved.