COMPUTERIZED QUANTITATIVE-ANALYSIS OF KINETIC VISUAL-FIELDS
COMPUTERIZED QUANTITATIVE-ANALYSIS OF KINETIC VISUAL-FIELDS
复制标题
DOI：
10.1016/0002-9394(86)90648-3
复制
发表时间：
1986-04-01
影响因子：
4.2
通讯作者：
TOBLER, WR
中科院分区：
文献类型：
--
作者：
WELEBER, RG;TOBLER, WR
动态视野检查仍然是一种被广泛接受和使用的评估视野的方法。量化给定等视力线的视野面积的尝试已限于视野图上的面积测量，视野图是视野测定碗的内表面的方位等距极坐标图投影。由于这种投影固有的制图失真，当测量的边界远离图上的视野中心时，这种测量会扭曲暗点（或视区）的真实大小。我们相信，由暗点或视区对着的球面度立体角比平面表示上的面积更适合测量视野。我们用一个简单的计算机程序来确定立体角，为给定的等值线图周边视野数据。
Kinetic perimetry is still a widely accepted and used means of assessing the visual field. Attempts at quantifying the area of vision for given isopters have been limited to area measurements on visual field charts, which are azimuthal equidistant polar map projections of the inside surface of the perimetry bowl. Such measurements distort the true size of scotomas (or seeing areas) when the boundaries measured are farther from the center of the field on the chart because of cartographic distortion inherent with this projection. We believe that the solid angle in steradians subtended by the scotoma or the seeing area is a more appropriate measure of the visual field than area on a flat representation. We used a simple computer program to determine the solid angle for given isopters of graphed perimetric visual field data.