Levi D M, Klein S A, Aitsebaomo P
Vision Res. 1984;24(8):789-800. doi: 10.1016/0042-6989(84)90150-0.
This paper describes the "motion" properties of the amblyopic fovea and compares them to the normal periphery. Specifically, thresholds for detection of the displacement of a grating pattern, and for discrimination of displacement direction were measured. The main findings of these experiments were: in the central vision of both normal and amblyopic observers, unreferenced displacement are detected with an accuracy equal to the observer's grating acuity; in the normal periphery, unreferenced motion thresholds fall off at a slower rate than does grating acuity; in amblyopic eyes, displacement thresholds are most elevated centrally; the addition of an abutting reference improves detection of motion for the normal fovea and in anisometropic amblyopes, but elevates motion thresholds in both the normal periphery and in the fovea of amblyopes with strabismus. The adequacy of the normal periphery as a model for the central vision of amblyopes is discussed.
本文描述了弱视中央凹的“运动”特性，并将其与正常周边视觉进行比较。具体而言，测量了检测光栅图案位移的阈值以及辨别位移方向的阈值。这些实验的主要发现如下：在正常和弱视观察者的中央视觉中，未参照的位移检测精度与观察者的光栅视力相当；在正常周边视觉中，未参照的运动阈值下降速度比光栅视力慢；在弱视眼中，位移阈值在中央区域升高最为明显；添加邻接参照可改善正常中央凹和屈光参差性弱视患者对运动的检测，但会提高正常周边视觉以及斜视性弱视患者中央凹的运动阈值。文中还讨论了将正常周边视觉作为弱视中央视觉模型的适用性。
