In:
Journal of Refractive Surgery, SLACK, Inc., Vol. 19, No. 3 ( 2003-05), p. 309-315
Abstract:
ABSTRACT PURPOSE: To identify risk factors in a series of patients who developed steep central islands after laser in situ keratomileusis (LASIK). METHODS: We analyzed and compared the refractive and topographic outcome of a study group composed of 83 eyes of 44 patients who underwent LASIK using the VISX Star3 excimer laser with a refraction-matched control group of 83 eyes treated later. The vacuum aspirator of the excimer laser was abnormally positioned during the surgeries performed in the study group. RESULTS: Mean preoperative spherical equivalent refraction in the study group was -6.75 ± 2.50 D. Four eyes with a mean preoperative spherical equivalent refraction of -9.27 ± 2.29 D developed steep central islands. Thirty-three (38%) of 83 eyes treated needed retreatment for residual myopia or myopic astigmatism. In the control group, mean preoperative spherical equivalent refraction was -6.76 ± 2.50 D. Ninety-three percent of eyes were within ±1.00 D of target refraction. Five (6.02%) of 83 eyes required retreatment and no eyes developed central islands. CONCLUSION: The abnormally positioned vacuum aspirator coupled with the higher preoperative refractive correction were the likely causative factors for central island formation and the increased incidence of undercorrection in these patients. [J Refract Surg 2003;19:309-315]
Type of Medium:
Online Resource
ISSN:
1081-597X
DOI:
10.3928/1081-597X-20030501-07
Language:
English
Publisher:
SLACK, Inc.
Publication Date:
2003
