Traffic gap judgment in people with significant peripheral field loss
Traffic gap judgment in people with significant peripheral field loss
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DOI：
10.1097/opx.0b013e31815ed6fd
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发表时间：
2008-01-01
影响因子：
1.4
通讯作者：
Congdon, Nathan
中科院分区：
文献类型：
--
作者：
Cheong, Allen M. Y.;Geruschat, Duane R.;Congdon, Nathan
Purpose. Subjects with significant peripheral field loss (PFL) self report difficulty in street crossing. In this study, we compared the traffic gap judgment ability of fully sighted and PFL subjects to determine whether accuracy in identifying crossable gaps was adversely affected because of field loss. Moreover, we explored the contribution of visual and nonvisual factors to traffic gap judgment ability.Methods. Eight subjects with significant PFL as a result of advanced retinitis pigmentosa or glaucoma with binocular visual field 0.60) were significantly correlated with traffic gap judgment performance.Conclusions. As a consequence of significant field loss, limited visual information about the traffic environment can be acquired, resulting in significantly reduced performance in judging safe crossable gaps. This poor traffic gap judgment ability in the PFL subjects raises important concerns for their safety when attempting to cross the street.
