Freeman Ellen E, Muñoz Beatriz, Turano Kathleen A, West Sheila K
Wilmer Eye Institute, Johns Hopkins University, Baltimore, Maryland, USA.
Invest Ophthalmol Vis Sci. 2006 Nov;47(11):4762-6. doi: 10.1167/iovs.06-0436.
The purpose of this analysis was to determine whether dynamic measures of vision, such as dynamic acuity and motion threshold, are independently associated with self-reported difficulty in activities involving vision.
Data were used from the third round of the Salisbury Eye Evaluation (n = 1198), a longitudinal, population-based study of older adults. Multiple measures of visual function were tested, including dynamic acuity, motion threshold, visual acuity, contrast sensitivity, visual fields, and stereoacuity. Difficulty was assessed using the Activities of Daily Vision Scale (ADVS). Polytomous logistic regression procedures were used to determine log odds ratios for the dynamic measures of vision while adjusting for demographic, health, and other measures of vision.
In fully adjusted models including other vision variables, worse dynamic acuity was associated with greater difficulty on the near-vision ADVS subscale (beta = 0.68, P < 0.01), but not with the overall ADVS or the far-vision or night-driving subscales (P > 0.05). Motion threshold was not associated with the overall ADVS or any of the subscales after controlling for other vision variables, although it was associated when no other vision variables were in the models.
Motion threshold was not independently associated with any ADVS difficulty. Dynamic acuity was independently associated with self-reported difficulty with near-vision tasks only. Other studies should confirm this association. If confirmed, strategies to improve dynamic acuity could be developed to try to reduce difficulty with tasks involving near vision.
本分析的目的是确定动态视觉测量指标，如动态视力和运动阈值，是否与自我报告的涉及视觉的活动困难独立相关。
数据来自索尔兹伯里眼评估的第三轮研究（n = 1198），这是一项基于人群的老年人纵向研究。测试了多种视觉功能指标，包括动态视力、运动阈值、视力、对比敏感度、视野和立体视锐度。使用日常视觉活动量表（ADVS）评估困难程度。采用多分类逻辑回归程序来确定视觉动态测量指标的对数比值比，同时对人口统计学、健康状况和其他视觉测量指标进行调整。
在包含其他视觉变量的完全调整模型中，较差的动态视力与近视力ADVS子量表上更大的困难相关（β = 0.68，P < 0.01），但与总体ADVS或远视力或夜间驾驶子量表无关（P > 0.05）。在控制其他视觉变量后，运动阈值与总体ADVS或任何子量表均无关联，尽管在模型中没有其他视觉变量时它是相关联的。
运动阈值与ADVS所衡量的任何困难均无独立关联。动态视力仅与自我报告的近视力任务困难独立相关。其他研究应证实这种关联。如果得到证实，可以制定提高动态视力的策略，以尝试减少涉及近视力任务的困难。
