Abstract
Abstract: :
Purpose: To quantitatively evaluate changes in higher–order aberrations after scleral buckling surgery for retinal detachment. Methods: Subjects were 70 eyes of 65 patients (age 45.1± 18.5 years, mean ± SD) undergoing primary scleral buckling surgery for retinal detachment and 50 eyes of 50 age–matched normal controls (44.4 ± 15.8 years). Patients underwent one of the following three procedures: segmental buckling alone (SB group, 40 eyes), encircling alone (E group, 10 eyes), and encircling with additional segmental buckling (SB+E group, 20 eyes). We measured corneal and ocular higher–order aberrations for a 6–mm pupil using the wavefront analyzer (Topcon KR–9000PW) 2 weeks, 1 month, and 3 months after surgery. Results: In the SB and SB+E groups, ocular coma–like and spherical–like aberrations were significantly higher than those in the normal controls throughout the observation period (p<0.01, p<0.005). In the E group, ocular coma–like and spherical–like aberrations significantly increased 2 weeks after surgery (p<0.01), which returned to the normal level by 1 month. The vertical coma (Zernike C3,–1) became negative values (significantly lower than zero, p<0.01) in patients who received segmental buckle in the upper quadrant. There was significant correlation between corneal and ocular aberrations at 3 months postoperatively (p<0.01), suggesting that the increases in ocular aberrations were attributable to those of corneal aberrations. Conclusions: The scleral buckling surgery increased ocular higher–order aberrations. The usage of segmental buckle induced greater and prolonged increases in higher–order aberrations than the encircling procedure alone. The direction of coma aberration corresponded to the location of the segmental buckle.
Keywords: retinal detachment