[Technical realization of an LCD-based vision test device].
We describe a computer-aided self-test vision screener for testing near and far visual acuity. The device generates images separately for each eye on a LCD. Acuity can be measured in the range between 0.1 and 1.6 for any distance between 0.34 m and 6 m. In addition, it also enables testing for colour deficiency, phoria, stereopsis and contrast sensitivity. The device is fully automatic and enables self-testing of the above mentioned functions. Initial practical application in an industrial environment has demonstrated the practicability of the device.
Zeller
C
C
Institut für Hygiene und Arbeitsphysiologie Angewandte Sehforschung Eidgenössische Technische Hochschule Zürich Clausiusstrasse 25 CH-8092, Zürich.
Menozzi
M
M
Stüdeli
T
T
D003936:Diagnosis, Computer-Assisted / Q000295:instrumentation*; D004867:Equipment Design; D006801:Humans; D012984:Software; D014786:Vision Disorders / Q000175:diagnosis*; D015351:Vision Screening / Q000295:instrumentation*; D014792:Visual Acuity; D058609:Visual Field Tests / Q000295:instrumentation