近视患者优势眼与非优势眼的Kappa角、瞳孔大小及中心位置的动态变化

目的 探讨行飞秒激光制瓣准分子激光原位角膜磨镶术的近视患者优势眼与非优势眼的Kappa角、瞳孔大小及中心位置的动态变化.方法 选取2018年12月至2020年8月在延边大学附属医院眼科行飞秒激光制瓣准分子激光原位角膜磨镶术的近视患者117例(234眼)为研究对象.采用ALLEGRO Topolyzer角膜地形图仪(德国...

Dynamic changes in the angle Kappa,pupil size,and center position among dominant and nondominant eyes in myopic patients

Objective To investigate the dynamic changes in the angle Kappa,pupil size,and center position of dominant and nondominant eyes in myopic patients undergoing femtosecond laser combined with excimer laser in situ keratomileusis(FS-LASIK).Methods Totally 117 myopic patients(234 eyes)who underwent FS-LASIK in the Affiliated Hospital of Yanbian University from December 2018 to August 2020 were enrolled in the study.The WaveLightALLEGRO Topolyzer(WaveLight GmbH,Germany)was used to measure and record the changes in pupil size and center position of all eyes under photopic and mesopic conditions within 60 s.The wavefront aberration optimized cutting procedure of the WaveLight Eagle Vision EX500 excimer laser(500 kHz)was used for excimer laser cutting.The P-Dist(the offset between the pupil center and the coaxially sighted corneal light reflex)in supine position was recorded.Paired t-test was used to compare the parameters between dominant and nondominant eyes.Results Among the 117 patients,82 had the right dominant eye and 35 had the left dominant eye.The anterior chamber of dominant eyes was slightly deeper than that of nondominant eyes(P<0.05).Under mesopic conditions,the horizontal P-Dist was(-0.07±0.14)mm in dominant eyes and(0.01±0.13)mm in nondominant eyes,and the difference was statistically significant between the two groups(P<0.05).From mesopic to photopic conditions,the shift of pupil center was(0.08±0.13)mm in dominant eyes and(0.04±0.12)mm in nondominant eyes as pupils contracted,and the difference was statistically significant between the two groups(P=0.034);the pupil diameter change was(3.44±0.50)mm in dominant eyes and(3.17±0.49)mm in nondominant eyes,and the difference was statistically significant between the two groups(P=0.047).P-Dist of all eyes was(0.209±0.101)mm.P-Dist was(0.195±0.085)mm in dominant eyes and(0.215±0.103)mm in nondominant eyes,and the difference was statistically significant between the two groups(P=0.041).Conclusion P-Dist of dominant eyes is smaller than that of nondominant eyes,and the pupil center of dominant eyes slightly shifts to the temporal side under mesopic conditions.It is recommended to adjust the angle Kappa of dominant and nondominant eyes during surgery.