Proper Positioning of the Plume Evacuator in the VISX Star3 Excimer Laser Minimizes Central Island Formation in Patients Undergoing Laser in situ Keratomileusis

摘要: Purpose To identify risk factors in a series of patients who developed steep central islands after laser situ keratomileusis (LASIK). Methods We analyzed and compared the refractive topographic outcome study group composed 83 eyes 44 underwent LASIK using VISX Star3 excimer with refraction-matched control treated later. The vacuum aspirator was abnormally positioned during surgeries performed group. Results Mean preoperative spherical equivalent refraction -6.75 +/- 2.50 D. Four mean -9.27 2.29 D islands. Thirty-three (38%) needed retreatment for residual myopia or myopic astigmatism. In group, -6.76 Ninety-three percent were within 1.00 target refraction. Five (6.02%) required no Conclusion coupled higher correction likely causative island formation increased incidence undercorrection these patients.