SENSORY AND OCULOMOTOR CONTRIBUTIONS TO OCULAR DISORDER

空间对比敏感度用于评估 在患有各种毒性， 炎症性、退行性或先天性视网膜病变， 视觉系统的神经眼科疾病。 无标准 强迫选择的心理物理程序，因为这种方法是 以前显示，以最小化假阳性或假阴性诊断， 初始测试，并最大限度地减少重复检测时灵敏度的虚假变化 试验. 对比敏感度测试，同时需要更多患者 测试时间，继续优于传统的敏锐度测量上级 用于检测早期损失和用于监测视觉变化， 在接受治疗的患者中消退。 参考标准数据 使得可以区分由于眼睛的对比敏感度损失， 在正常衰老的基础上出现的紊乱。 视网膜图像稳定系统与 对空间对比敏感度测试系统进行初步研究 使用人工暗点和复杂的空间亮度对正常受试者 研究注视错误，眼球运动， 和视野缺陷。 该系统目前正在修改， 允许焦点视网膜电图和高分辨率微视野检查， 眼科诊所患者视网膜的小的局部区域。

Spatial contrast sensitivity was used to assess losses or changes in overall visual resolution in patients having a variety of toxic, inflammatory, degenerative, or congenital retinal and neuro-ophthalmological disorders of the visual system. A criterion-free forced-choice psychophysical procedure was used, since this method was previously shown to minimize false positive or false negative diagnoses at initial test and to minimize spurious changes in sensitivity with repeated testing. Contrast sensitivity testing, while requiring more patient testing time, continued to be superior to conventional acuity measurements for the detection of early losses and for monitoring changes in visual resolution in patients undergoing treatment. Age-referenced normative data make it possible to distinguish contrast sensitivity loss due to ocular disorder from that expected on the basis of normal aging. A retinal image stabilization system was used in conjunction with the spatial contrast sensitivity test system to carry our preliminary research on normal subjects using artificial scotomata and complex spatial luminance profiles to examine interactions among fixational errors, eye movements, and visual field defects. This system is currently being modified to permit focal electroretinography and high resolution microperimetry in small, localized regions of the retinas in Eye Clinic patients.