VISUAL TESTS FOR PATIENTS WITH CENTRAL SCOTOMA

中央暗点患者的视力检查

• 批准号: 3262437
• 负责人: ROCKEFELLER S YOUNG
• 金额: $ 6.43万
• 依托单位: TEXAS TECH UNIVERSITY HEALTH SCIS CENTER
• 依托单位国家: 美国
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-09-01 至 1989-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3262437
• 关键词: brightness discrimination; computer assisted diagnosis; eye disorder diagnosis; human subject; questionnaires; scotoma; vision tests; visual fields; brightness discrimination; computer assisted diagnosis; eye disorder diagnosis; human subject; questionnaires; scotoma; vision tests; visual fields

The ultimate goal is the development of visual tests that can be used by practicing eye care specialists to evaluate the "useful" vision in patients with bilateral central scotoma. Patients with central scotomata, as a general rule, have adequate vision for mobility under ideal conditions. The factors that limit their residual vision include contrast and illumination levels. The specific aims of this investigation are (1) to determine whether the reductions in contrast sensitivity correlate with the severity of visual problems that patients experience in everyday situations; (2) to determine whether contrast sensitivity correlates better with the patients' experience than other visual measures, such as the size of the patients' scotoma; and (3) to determine whether the measurement of vision at different illumination levels contributes to the evaluation of the patients' ability to function in their environment. The approach for evaluating the relative merits of different visual tests and illumination levels uses a multiple regression analysis. The patients' ability to function in "everyday" situations will be assessed by asking the patients to estimate (on a scale of 1 to 10) the degree of visual difficulty that they experience. A multiple regression (R2) value will be computed between the visual measures, such as contrast sensitivity, and the questionnaire responses.

最终目标是开发视觉测试 练习眼保健专家来评估患者的“有用”愿景 与双侧中央Scotoma。 中央scotomata的患者 一般规则，在理想条件下具有足够的愿景。 限制其残留视力的因素包括对比和 照明水平。 这项调查的具体目的是（1）确定是否是否 对比灵敏度的降低与视觉的严重程度相关 患者在日常情况下遇到的问题； （2）确定 对比敏感性是否与患者的相关性更好 经验比其他视觉措施，例如患者的大小 Scotoma; （3）确定视觉测量是否在 不同的照明水平有助于评估 患者在环境中发挥作用的能力。 评估不同视觉测试相对优点的方法 照明水平使用多元回归分析。 患者的 在“日常”情况下运作的能力将通过询问来评估 患者估计（以1至10的比例）视觉程度 他们遇到的困难。 多重回归（R2）值将是 在视觉措施（例如对比灵敏度）和 问卷回答。