Kuyk T, Elliott J L, Fuhr P S
Department of Veterans Affairs Medical Center, Birmingham, Alabama, USA.
Optom Vis Sci. 1998 Mar;75(3):174-82. doi: 10.1097/00006324-199803000-00022.
This study examined how mobility performance in a heterogeneous sample of visually impaired adults relates to measures of visual sensory and perceptual function. We found that the best predictors of mobility performance under photopic and scotopic lighting conditions were models that incorporated visual field extent (VFE) and scanning ability. Together with measures of contrast sensitivity and spatial resolution, these models accounted for approximately 50% of the variance in mobility performance. We also found that VFE and scanning ability were the dominant predictor variables when the sample was broken down by subjects' type of vision loss into an acuity loss, a visual field restriction, and a combination loss group.
本研究探讨了视力受损成年人异质性样本中的移动能力表现与视觉感觉和知觉功能测量指标之间的关系。我们发现，在明视觉和暗视觉照明条件下，移动能力表现的最佳预测模型是纳入了视野范围（VFE）和扫视能力的模型。这些模型与对比敏感度和空间分辨率测量指标一起，解释了移动能力表现中约50%的方差。我们还发现，当根据受试者的视力丧失类型将样本细分为视力敏锐度丧失组、视野受限组和综合丧失组时，VFE和扫视能力是主要的预测变量。
