Recognition speed using a bioptic telescope.
Recognition speed using a bioptic telescope.
复制标题
使用双光学望远镜的识别速度。
DOI：
10.1097/opx.0b013e31818e8eca
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Sonsino,Jeffrey
中科院分区：
文献类型：
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作者：
Tadin,Duje;Lappin,JosephS;Sonsino,Jeffrey
目的。本研究旨在量化眼镜式双光学望远镜新手用户的训练和渐近效率。方法。15 名模拟中心视力为 20/200 的受试者配备了双光学望远镜。我们测量了受试者使用双光学望远镜定位和识别小字母的速度，该小字母以 ±45 的偏心率呈现在拥挤的字母阵列中。目标的出现和位置都是随机的。受试者参加了四次实验，总共 500 次（短时间组）或 1000 次试验（长时间组）。结果。训练后，双光学望远镜的字母识别速度下降了约 800 毫秒。然而，大部分改进发生在前 150 次试验中。组间不存在系统性差异。双光学望远镜的渐近识别速度约为 1000 毫秒，比相同任务但 20/20 视力的识别速度长 450 毫秒。初步测量表明，这些学习效果会持续数年。结论。显然，新手用户可以快速熟练地使用眼镜式双光学望远镜。该任务可用于在安全的环境中培训新的双光学望远镜用户并评估他们的进展。
Purpose.This study sought to quantify the training and the asymptotic efficiency of novice users of spectacle-mounted bioptic telescopes.Methods.Fifteen subjects with simulated 20/200 central acuity were fitted with bioptic telescopes. We measured the speed with which subjects were able to use a bioptic telescope to locate and identify a small letter, which was presented peripherally in a crowded array of letters at±45 eccentricity. Both the target onset and its location were random. Subjects participated in four experimental sessions for a total of 500 (short session group) or 1000 trials (long session group).Results.After training, the letter recognition speed with a bioptic telescope decreased by about 800 ms. Most of the improvement, however, occurred within the first∼ 150 trials. There were no systematic differences between groups. The asymptotic recognition speed with a bioptic telescope was about 1000 ms, 450 ms longer than the recognition speed in the same task but with 20/20 vision. Preliminary measurements suggest that these learning effects persist over a period of several years.Conclusions.Evidently, novice users can quickly acquire proficiency in using a spectacle-mounted bioptic telescope. This task could be used to train new bioptic telescope users in a safe environment and to evaluate their progress.