Department of Binocular Vision Pathophysiology and Strabismus, Medical University of Lodz, Lodz, Poland.
Eur J Ophthalmol. 2021 Mar;31(2):704-708. doi: 10.1177/1120672120905312. Epub 2020 Feb 14.
To evaluate the range of cyclodeviation in normal individuals by means of Cyclocheck application recently designed by the authors and freely available at www.cyclocheck.com.
Healthy subjects with normal muscle balance, best-corrected visual acuity of ⩾0.8, and stereopsis on Randot charts of ⩽100 s of arc were included in the study. Two separate digital fundus photographs were taken of each eye of every patient. The disk-foveal angle was calculated using the Cyclocheck application. The average result of the disk-foveal angle measurements were considered for data analysis.
A total of 131 patients met inclusion criteria for the study population. The mean value of the disk-foveal angle in the whole study group (both right and left eye) was 6.39° ± 2.72° with 5.26° ± 2.56° (range from -0.4° to 12.55°) in the right eye and 7.52° ± 2.39° (range from 1.25° to 12.76°) in the left eye. The mean value of the disk-foveal angle of the left eye was greater by 2.26° than that of the right eye.
Cyclocheck software allows easy assessment of cyclodeviation. Normal individuals present with a positive value of the disk-foveal angle with a certain spread of the results. The analysis of obtained measurements revealed a significant asymmetry between both eyes with the left eye being more excyclodeviated in an otherwise orthotropic population, which remains a subject for further investigations.
使用作者最近设计的 Cyclocheck 应用程序评估正常个体的偏斜范围，该应用程序可在 www.cyclocheck.com 上免费获得。
本研究纳入了肌肉平衡正常、最佳矫正视力 ⩾0.8、Randot 图表立体视 ⩽100 秒的健康受试者。每位患者的每只眼均拍摄两张独立的数字眼底照片。使用 Cyclocheck 应用程序计算盘-黄斑角。对盘-黄斑角测量的平均结果进行数据分析。
共有 131 名患者符合研究人群的纳入标准。整个研究组（右眼和左眼）的盘-黄斑角平均值为 6.39°±2.72°，右眼为 5.26°±2.56°（范围为-0.4°至 12.55°），左眼为 7.52°±2.39°（范围为 1.25°至 12.76°）。左眼的盘-黄斑角平均值比右眼大 2.26°。
Cyclocheck 软件允许轻松评估偏斜。正常个体的盘-黄斑角呈正值，结果有一定的分布范围。对获得的测量值进行分析显示，在其他方面正常的人群中，双眼存在明显的不对称性，左眼的外偏斜程度更大，这仍是进一步研究的课题。
