Journal of the Korean Ophthalmological Society 2002;43(12):2391-2400.
Published online December 1, 2002.
The Evaluation of Contrast Sensitivity and Glare after LASIK Using Flying Spot Mode Laser According to Pupil Diameter and Refractive Error.
Kyu Dae Choi, Hyung Bok Park, Do Hyung Lee
Department of Ophthalmology, Ilsan Paik Hospital, College of medicine, Inje University, Korea. dhlee@ilsanpaik.ac.kr
Flying spot mode laser를 이용한 LASIK 수술 후 동공크기와 굴절력에 따른 대비감도와 눈부심의 변화
최규대 ( Kyu Dae Choi ) , 박형복 ( Hyung Bok Park ) , 이도형 ( Do Hyung Lee )
Abstract
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 1 week, 1 month and 3 months after LASIK using CGT-1000 (Takagi, Japan). RESULTS: The mean preoperative spherical equivalent (SE) was -5.4+/-2.9D. The mean pupil diameter was 5.95+/-0.46 mm in scotopic condition. Contrast sensitivity was significantly reduced 1 month after LASIK, depending on pupil diameter and degree of preoperative myopia. However, values returned to preoperative figures thereafter (P<0.05). Glare sensitivity was improved at all frequencies 3 months after LASIK, and most significantly at high frequency (P=.031). CONCLUSIONS: LASIK using employing the flying spot mode laser can effectively accomplish refractive correction without reduction of preoperative contrast and glare sensitivity values.
Key Words: Contrast sensitivity;Glare;LASIK;Visual quality
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