Bedell H E, Flom M C
Am J Optom Physiol Opt. 1983 Jun;60(6):426-35. doi: 10.1097/00006324-198306000-00003.
The mononuclear spatial judgments made by normal adults are quite accurate and precise. Although relatively little is known about how the spatial sense develops, it is likely that it can be compromised by abnormal visual experience as provided, for example, by strabismus. Previously, we reported that the spatial sense of strabismic amblyopic eyes is distorted, having quantified these distortions as marked inaccuracies in equating spatial extents in the nasal and temporal field and specifying when one target is vertically aligned with another. Distortions--localized "expansions" and "compressions" of spatial values and "bending" of direction lines--characterize the amblyopic eyes of strabismics but not non-squinting anisometropes. Thus, according to our previously published hypothesis, spatial distortions can account for the reduced acuity and abnormal oculomotor behavior of strabismic (but not anisometropic) amblyopic eyes. In the present paper, we provide quantification of another spatial measures--spatial precision--and show that extensive imprecision characterizes the space sense of the strabismic amblyopic eye. We now add spatial imprecision to our original hypothesis as a significant element in accounting for the abnormal sensory and motor behaviors of strabismic amblyopic eyes.
正常成年人做出的单核空间判断相当准确和精确。尽管对于空间感如何发展了解相对较少，但它很可能会受到异常视觉体验的影响，例如斜视所导致的异常视觉体验。此前，我们报道过斜视性弱视眼的空间感是扭曲的，我们已将这些扭曲量化为在使鼻侧和颞侧视野中的空间范围相等以及确定一个目标与另一个目标垂直对齐时的明显不准确。扭曲——空间值的局部“扩展”和“压缩”以及方向线的“弯曲”——是斜视患者弱视眼的特征，但非斜视性屈光参差患者的弱视眼则没有。因此，根据我们之前发表的假设，空间扭曲可以解释斜视性（而非屈光参差性）弱视眼视力下降和异常眼球运动行为的原因。在本文中，我们对另一种空间测量——空间精度进行了量化，并表明广泛的不精确是斜视性弱视眼空间感的特征。我们现在将空间不精确添加到我们原来的假设中，作为解释斜视性弱视眼异常感觉和运动行为的一个重要因素。
