Tian Han1,2,3, Feng Zhao1,2,3,4, Xun Chen1,2,3, Huamao Miao1,2,3, Zhuoyi Chen1,2,3, Xingtao Zhou5,6,7. 1. Department of Ophthalmology and Vision Science, The Eye and ENT Hospital of Fudan University, No.19 Baoqing Road, Xuhui District, Shanghai, China. 2. NHC Key Laboratory of Myopia (Fudan University); Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China. 3. Research Center of Ophthalmology and Optometry Shanghai, Shanghai, China. 4. The Department of Ophthalmology, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China. 5. Department of Ophthalmology and Vision Science, The Eye and ENT Hospital of Fudan University, No.19 Baoqing Road, Xuhui District, Shanghai, China. doctzhouxingtao@163.com. 6. NHC Key Laboratory of Myopia (Fudan University); Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, China. doctzhouxingtao@163.com. 7. Research Center of Ophthalmology and Optometry Shanghai, Shanghai, China. doctzhouxingtao@163.com.
Abstract
PURPOSE: To investigate changes in objective disk halo size produced by a glare source after small incision lenticule extraction (SMILE) for myopia correction. METHODS: This prospective clinical study included 45 right eyes of 45 patients with a mean age of 25.40 ± 5.06 years and mean spherical equivalent (SE) of - 6.08 ± 1.90 diopters. Disk halo size was measured with a vision monitor before surgery and at postoperative 1 week and 3 months. Other information was collected, including age, SE, lenticule thickness, lenticule diameter, dark pupil, and pupillary response to light parameters (initial diameter; amplitude, latency, duration, and velocity of contraction; latency, duration, and velocity of dilation; and maximum, minimum, and average pupil size). RESULTS: Compared to preoperative values, disk halo size increased significantly at postoperative 1 week (P = 0.026) and returned to baseline at postoperative 3 months (P = 0.349). Preoperative disk halo size significantly correlated with SE (r = - 0.346, P = 0.020), minimum pupil size (r = 0.365, P = 0.014), and average pupil size (r = 0.310, P = 0.038). Disk halo size at postoperative 1 week was significantly correlated with age (r = 0.324, P = 0.030) and minimum pupil size (r = 0.297, P = 0.047). Disk halo size at postoperative 3 months was significantly correlated with lenticule diameter (r = - 0.362, P = 0.015), initial diameter (r = 0.311, P = 0.037), maximum pupil size (r = 0.312, P = 0.037), minimum pupil size (r = 0.440, P = 0.002), and average pupil size (r = 0.373, P = 0.012). CONCLUSIONS: After SMILE, disk halo size demonstrated a temporary increase and then returned to baseline.
PURPOSE: To investigate changes in objective disk halo size produced by a glare source after small incision lenticule extraction (SMILE) for myopia correction. METHODS: This prospective clinical study included 45 right eyes of 45 patients with a mean age of 25.40 ± 5.06 years and mean spherical equivalent (SE) of - 6.08 ± 1.90 diopters. Disk halo size was measured with a vision monitor before surgery and at postoperative 1 week and 3 months. Other information was collected, including age, SE, lenticule thickness, lenticule diameter, dark pupil, and pupillary response to light parameters (initial diameter; amplitude, latency, duration, and velocity of contraction; latency, duration, and velocity of dilation; and maximum, minimum, and average pupil size). RESULTS: Compared to preoperative values, disk halo size increased significantly at postoperative 1 week (P = 0.026) and returned to baseline at postoperative 3 months (P = 0.349). Preoperative disk halo size significantly correlated with SE (r = - 0.346, P = 0.020), minimum pupil size (r = 0.365, P = 0.014), and average pupil size (r = 0.310, P = 0.038). Disk halo size at postoperative 1 week was significantly correlated with age (r = 0.324, P = 0.030) and minimum pupil size (r = 0.297, P = 0.047). Disk halo size at postoperative 3 months was significantly correlated with lenticule diameter (r = - 0.362, P = 0.015), initial diameter (r = 0.311, P = 0.037), maximum pupil size (r = 0.312, P = 0.037), minimum pupil size (r = 0.440, P = 0.002), and average pupil size (r = 0.373, P = 0.012). CONCLUSIONS: After SMILE, disk halo size demonstrated a temporary increase and then returned to baseline.
Entities:
Keywords:
Disk halo size; Glare; Pupillary light response; Small incision lenticule extraction (SMILE)
Authors: Melissa D Bailey; G Lynn Mitchell; Deepinder K Dhaliwal; Brian S Boxer Wachler; Karla Zadnik Journal: Ophthalmology Date: 2003-07 Impact factor: 12.079