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本文介绍一遮盖/非遮盖和交替遮盖的新方法,它不需要观察眼的移动而通过隐斜或显斜偏差角的测量来确定,其准确度为1°。方法:当一束平行光线射到眼上时,可以观察到由角膜前面和晶体后面形成的2个影象(第1和第4 Purkinje影象)。当入射光和视轴形成一个角度时,2个影象位于视轴的两侧。当两个影象在一垂直线上,且限围绕着垂直轴转动时,
This article presents a new method for masking / unmasking and alternating masking, which does not require eye observation and is based on measurements of phoria or oblique deviation angles with an accuracy of 1 °. METHODS: Two images (first and fourth Purkinje images) formed by the anterior cornea and the posterior lens were observed when a parallel beam of light hit the eye. When the incident light and the visual axis form an angle, the two images are located on both sides of the visual axis. When two images are on a vertical line and the limit of rotation is about the vertical axis,