Bedell H D, Flom M C
Invest Ophthalmol Vis Sci. 1981 Feb;20(2):263-8.
We examined monocular spatial vision of strabismic amblyopes by measuring errors of relative directionalization (specifying whether or not two targets are in vertical alignment) and partitioning (equating left- and right-field spaces). Abnormally large errors were made when fixation occurred with the amblyopic eye; these errors did not attributable to reduced acuity, unsteady fixation, or eccentric fixation. From the results we infer that monocular space perception of strabismic amblyopic eyes is severely distorted and is characterized by "bending" of vertical lines of direction and by local "compressions" and "expansions" of horizontal spatial values. Such distortions can readily account for many of the oculomotor abnormalities of the amblyopic eye as well as for the strabismic subject's phenomenological description of the difficulties experienced in using this eye--difficulties that are typically much worse than the reduced acuity would predict.
我们通过测量相对定向误差（确定两个目标是否垂直对齐）和划分（使左右视野空间相等）来检查斜视性弱视患者的单眼空间视觉。当用弱视眼注视时会出现异常大的误差；这些误差并非归因于视力下降、注视不稳定或偏心注视。从结果我们推断，斜视性弱视眼的单眼空间感知严重扭曲，其特征是方向垂直线的“弯曲”以及水平空间值的局部“压缩”和“扩展”。这种扭曲很容易解释弱视眼的许多眼球运动异常，以及斜视患者对使用该眼时所经历困难的现象学描述——这些困难通常比视力下降所预测的要严重得多。
