Effert R, Jansen W, Rau G, Reim M
Augenklinik, Rhein.-Westf. Technische Hochschule Aachen.
Klin Monbl Augenheilkd. 1994 Mar;204(3):181-3. doi: 10.1055/s-2008-1035517.
Although the measurement of visual acuity at distance is more important in ophthalmological practice, the visual acuity at near should be tested additionally. In a recently published paper we showed that with today's computer technology visual acuity at distance can be measured in standardized procedures according to DIN 58220. We describe here an additional, integrated setup, which allows the measurement of visual acuity also at near.
For testing visual acuity at near, the whole set of optotypes is presented on a transparent overlay mask in front of a computer monitor which is used as a program-controlled light source. A certain optotype is chosen by illuminating its background. The patient's responses are read via a small console by the computer. The test procedure follows the DIN requirements.
First reliability tests showed that the test arrangement is qualified for rapid and standardized determination of visual acuity at near and at distance under nearly natural viewing conditions.
尽管在眼科实践中远距离视力测量更为重要，但也应额外检测近距离视力。在最近发表的一篇论文中，我们表明利用当今的计算机技术，可按照DIN 58220标准程序测量远距离视力。在此我们描述一种额外的集成装置，它也能测量近距离视力。
为检测近距离视力，整套视标呈现在计算机显示器前的透明覆盖面罩上，该显示器用作程序控制光源。通过照亮视标的背景来选择某个视标。计算机通过一个小控制台读取患者的反应。测试程序符合DIN要求。
首次可靠性测试表明，该测试装置有资格在近乎自然的观察条件下快速、标准化地测定近距离和远距离视力。
