Jobke Sandra, Kasten Erich, Sabel Bernhard A
Institute of Medical Psychology, Otto-von Guericke-University, Magdeburg, Germany.
Clin Ophthalmol. 2007 Jun;1(2):111-7.
During perimetric testing it is well known to wear spectacles. But less is known about to what extent refractive errors affect the response time performing computer-based visual tasks.
Patients with visual field defects (VFD) (n = 6) and normal control subjects (n = 6) performed computer-based high resolution perimetry (HRP) with and without the use of spectacles. We recorded stimulus detection, response times, false hits, and fixation controls as well as contrast sensitivity with and without spectacles.
Performance without spectacles resulted in decreased contrast sensitivity of control subjects (41.5%, p < 0.05) and patients with VFD (36.4%, p < 0.05) and slowed reaction times from 436.2 ms to 463.7 ms in patients (p < 0.05) and from 371.3 ms to 402.3 ms in normal subjects (nonsignificant). In patients also reduced stimulus detection from 64.0% to 58.6% (nonsignificant) and increased number of false hits from 1.7 to 2.8% (nonsignificant) occurred. However, the normal subjects showed more false hits with glasses (2.3%) than without (1.0%, nonsignificant). The number of fixation control responses was unaffected. The majority of the subjects felt subjectively better wearing eyeglasses.
Both in normal subjects and patients with VFD computer-based diagnostic tests should always be performed with eyeglasses to optimize visual performance.
在视野检测过程中，佩戴眼镜是众所周知的做法。但对于屈光不正对执行基于计算机的视觉任务的反应时间影响程度的了解却较少。
有视野缺损（VFD）的患者（n = 6）和正常对照受试者（n = 6）在佩戴和不佩戴眼镜的情况下进行基于计算机的高分辨率视野检测（HRP）。我们记录了刺激检测、反应时间、误报以及注视控制情况，还有佩戴和不佩戴眼镜时的对比敏感度。
不佩戴眼镜时，对照受试者的对比敏感度降低（41.5%，p < 0.05），VFD患者的对比敏感度降低（36.4%，p < 0.05），患者的反应时间从436.2毫秒减慢至463.7毫秒（p < 0.05），正常受试者的反应时间从371.3毫秒减慢至402.3毫秒（无统计学意义）。患者的刺激检测率也从64.0%降至58.6%（无统计学意义），误报数量从1.7%增加至2.8%（无统计学意义）。然而，正常受试者佩戴眼镜时的误报更多（2.3%），而不佩戴时为1.0%（无统计学意义）。注视控制反应的数量未受影响。大多数受试者主观感觉佩戴眼镜时更好。
对于正常受试者和VFD患者，基于计算机的诊断测试都应始终佩戴眼镜进行，以优化视觉表现。
