FIELD DEFECTS AND VISUAL PERFORMANCE

拟议的工作将研究低磁场缺陷之间的关系 视力患者和日常任务的表现对移动性很重要， 阅读和成功使用光学辅助工具。 我们还将开发 用于对特定于的普通视野图进行评分的程序 这些任务。 这项研究将集中在四个视觉能力，预计将 在特定任务上的中介表现：1）检测，2）发现，3） 扫描静止物体，以及4）跟踪移动物体。 我们的绩效指标是：1）自我报告问卷， 在日常环境中探索视觉功能，2）直接观察 受试者在室内和室外的视觉功能，3）在 室内测试课程，4）阅读能力，和5）心理物理措施， 扫描和跟踪性能。 长期目标是：（1）更好地了解 场缺陷和视觉性能之间的关系，2）描述 决定成功使用和接受低视力辅助器的因素， 以及3）为临床医生和康复专业人员提供工具， 可以更好地预测客户在日常生活中的功能。

The proposed work will study the relationship between field defects in low vision patients and performance on everyday tasks important to mobility, reading, and successful use of optical aids. We will also develop procedures for scoring ordinary visual field maps that are specific to these tasks. The study will concentrate on four visual abilities that are expected to mediate performance on the specific tasks: 1) detecting, 2) finding, 3) scanning stationery objects, and 4) tracking moving objects. Our performance measures are 1) a self-report questionnaire designed to probe visual function in everyday circumstances, 2) direct observation of the subject's visual function both indoors and outdoors, 3) mobility on an indoor test course, 4) reading ability, and 5) psychophysical measures of scanning and tracking performance. The long-term objectives are to 1) provide a better understanding of the relationships between field defects and visual performance, 2) describe the factors that determine successful use and acceptance of low vision aids, and 3) provide clinicians and rehabilitation professionals with tools that can better predict the client's functioning in everyday life.