正常成年人中心固视点的微视野检测  

Position of central fixation of normal adults detected by microperimetry

作　　者：栗改云[1] 贾亚丁[1] 张棉花[1] 

机构地区：[1]山西省眼科医院,太原030002

出　　处：《中华眼底病杂志》2007年第6期398-400,共3页Chinese Journal of Ocular Fundus Diseases

摘　　要：目的观察正常成年人中心固视点相对于眼底视盘的位置关系，以及固视稳定性的特点。方法应用MP1微视野计对60位正常成年人的120只眼作固视检查，测量中心固视点相对于视盘的坐标位置，并对中心固视点与年龄和屈光度作相关分析，对双眼的差距作t检验。结果正常成年人中心固视点距离视盘颞侧边中点的水平距离为14．48^o±1．85^o，垂直距离为-2．14^o士1．26^o，90％分布在一个二维正态椭圆内；固视目标时，眼位处于一种不断的微动状态，水平和垂直方向活动度的中位数分别是0．4^o和0．3^o。结论正常成年人中心固视点的分布特征为一个二维正态椭圆，固视目标时眼位在水平方向的移动大于垂直方向的移动幅度。Objective To observe the relationship between position of normal central fixation and the position of the optic disc, and to find out the features of stability of fixation. Methods The position of central fixation of 120 eyes of 60 healthy adults was determined by MP-1 microperimeter. The position of central fixation relative to the position of the optic disk was measured. The relationship between the central fixation and the age or refraction was analyzed statistically. The difference between the right and left eye in each individual was analyzed with t-test. Results The central fixation located at the retina with the horizontal distance of 14.48^o± 1.85^o and vertical distance of -2. 14^o± 1.26^o from the temporal edge of the optic disk. In the 120 eyes, 90% of the central fixation located in a bivariate normal ellipse. The normal eyes usually kept in a slightly moving condition when a normal person fixing on a subject. The median of horizontal and vertical deviation was 0. 4^o and 0. 3^o respectively. Conclusion The distribution of central fixation in healthy adults is a bivariate normal ellipse. When fixing on a subject, the moving extent of the eyes in the horizontal direction is larger than that in the vertical direction.

关 键 词：眼球运动 注视 眼 视野检查法 视盘 

分 类 号：R686[医药卫生—骨科学]