CAJ | 학술논문

目的研究近视屈光手术人群眼角膜非球面特性(Q值)的分布特征以及相关因素对Q值的影响.方法随机收集近视屈光手术患者300例(600眼),使用Orbscan Ⅱz眼前节分析系统K&Q计算软件获得眼角膜6 mm分析区域的Q值,并针对Q值的分布特征及其与相关的屈光度、角膜曲率和角膜直径等因素进行相关分析.结果 300例600眼角膜Q值分布范围-0.51～1.03,平均(-0.16±0.15).Q值与角膜曲率、模拟角膜镜读数、5 mm区不规则指数和角膜前表面Diff值之间呈负相关,与前房深度和角膜直径呈正相关,而与球镜度数、等效球镜度、柱镜度数、3 mm区不规则指数、角膜后表面Diff值、年龄、眼压和角膜厚度之间不相关.同一个体双眼的Q值差异无统计学意义,但是男女之间的Q值差异有统计学意义.结论近视屈光手术人群眼角膜Q值呈近似正态分布,角膜Q值不是一个独立的参数,与眼部多个因素相关.
목적 연구근시굴광수술인군안각막비구면특성(Q치)적분포특정이급상관인소대Q치적영향.방법 수궤수집근시굴광수술환자300례(600안),사용Orbscan Ⅱz안전절분석계통K&Q계산연건획득안각막6 mm분석구역적Q치,병침대Q치적분포특정급기여상관적굴광도、각막곡솔화각막직경등인소진행상관분석.결과 300례600안각막Q치분포범위-0.51～1.03,평균(-0.16±0.15).Q치여각막곡솔、모의각막경독수、5 mm구불규칙지수화각막전표면Diff치지간정부상관,여전방심도화각막직경정정상관,이여구경도수、등효구경도、주경도수、3 mm구불규칙지수、각막후표면Diff치、년령、안압화각막후도지간불상관.동일개체쌍안적Q치차이무통계학의의,단시남녀지간적Q치차이유통계학의의.결론 근시굴광수술인군안각막Q치정근사정태분포,각막Q치불시일개독립적삼수,여안부다개인소상관.
Objective To study the distribution characters of corneal asphericity (Q-value) in myopia population for corneal laser refractive surgery and the related influencing factors.Methods Six hundred eyes of 300 patients with myopia for corneal laser refractive surgery were enrolled in this study with each patient selected randomly. The K&Q calculator of Orbscan Ⅱz anterior segment system was used to obtain the Q-value of 6 mm optical zone in 300 cases (600 eyes),and statistical analysis was used to comprehend the distribution characters of Q-value and its relations with diopter,cornea curvature and cornea diameter and so on. Results The Q-value of 600 eyes ranged from -0.51-1.03 with the mean value -0.16±0.15.The Q-value showed a negative correlation with cornea curvature, simulated keratometry, irregular index of 5 mm zone, diff value of anterior surface and a positive correlation with anterior chamber depth and cornea diameter, but no relate with spherical diopter,spherical equivalent,astigmatism diopter, irregular index of 3 mm zone, diff value of posterior surface,age, intraocular pressure, cornea thickness. There was no significant difference between right and left eyes individually,but significant differences between men and women.Conclusions The Q-value of 600 eyes of 300 cases are approximately normal distribution.The Q value is not an absolute parameter,it is related with many factors.