The Evaluation of Contrast Sensitivity and Glare after LASIK Using Flying Spot Mode Laser According to Pupil Diameter and Refractive Error

Purpose: To study the effect of LASIK using flying spot mode laser on contrast sensitivity and glare according to pupil diameter and preoperative refractive error. Methods : Fifty seven eyes of 42 patients had LASIK using MEL 70 G-scan (Asclepion Meditec, Germany) to correct myopia ranging from -2.50 to -10.50 diopter (D). The contrast and glare sensitivity were measured preoperatively and I week, 1 month and 3 months after LASIK using CGT-l000 (Takagi, Japan). Results: The mean preoperative spherical equivalent (SE) was -5.42.9D. The mean pupil diameter was 5.950.46mm in scotopic condition. Contrast sensitivity was significantly reduced I month after LASIK, depending on pupil diameter and degree of preoperative myopia. However, values returned to preoperative figures thereafter (P