低视力增强系统(LVES)的任务表现

P. Weckerle, S. Trauzettel-Klosinski, G. Kamin, E. Zrenner
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引用次数: 10

摘要

目的:利用低视力增强系统(LVES)评估中央性暗斑患者在日常生活活动(如阅读、写作、移动和对比敏感度)方面的任务表现。患者和方法:17例患者(年龄17-85岁,平均49±21岁)使用LVES进行检查,LVES是一种头戴式光电视觉辅助设备,可在不同距离聚焦,放大倍数为1.5至12倍,对比度增强。首先,在没有装置的情况下确定视力和放大倍数需求。然后,在对LVES进行个别调整后,利用该系统对不同任务的绩效进行评估,并采用半定量的方式进行评估。对比敏感度测量采用Pelli-Robson图表,有无LVES的对比度增强功能。结果:阅读流利无错误者10例,阅读犹豫无错误者3例,阅读困难者1例。三名患者无法…
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Task performance with the Low Vision Enhancement System (LVES)
Purpose: To evaluate task performance with the Low Vision Enhancement System (LVES) in patients with central scotoma with regard to daily living activities such as reading, writing, and mobility as well as contrast sensitivity. Patients and Methods: Seventeen patients (aged 17-85 years, mean 49 ± 21) were examined with the LVES, a head-mounted opto-electronic visual aid that provides focus at various distances, a magnification from 1.5 to 12 times, and contrast enhancement. First, visual acuity and magnification need were determined without the device. Then, after individual adjustment of the LVES, the performance of different tasks was evaluated using the system, and assessments were made in a semiquantitative manner. Contrast sensitivity was measured using Pelli-Robson charts with and without the contrast enhancement function of the LVES. Results: Reading was fluent without mistakes in 10 patients, hesitating without mistakes in three, and struggling with mistakes in one. Three patients were unable to r...
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