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CISDOC database

Document ID (ISN)53610
CIS number 90-627
ISSN - Serial title 0300-8134 - Journal of Human Ergology
Year 1988
Convention or series no.
Author(s) Takeda T., Ístberg O., Fukui Y., Iida T.
Title Dynamic accommodation measurements for objective assessment of eyestrain and visual fatigue
Bibliographic information Sep. 1988, Vol.17, No.1, p.21-35. Illus. 27 ref.
Abstract A high-precision optometer system has been developed for dynamic measurement of the refractive power of the eye. With the use of individually chosen stimulus steps, a subject's accommodation performance can be unobtrusively assessed in about 3min. Three experiments using this assessment method are described: (1) visual search using a visual display terminal (VDT) and a matched hard copy display, (2) visual search using a VDT with 5 different cathode ray tube (CRT) phosphor colours, and (3) round-the-clock optometer testing with different lines of view. The results show that the new method is sensitive enough to detect both decreased accommodation performance in the course of a few hours of visual work and a circadian rhythm in baseline accommodation and dark focus. The method is thus a potentially useful tool in research on eyestrain and visual fatigue.
Descriptors (primary) eye examinations; ophthalmology; visual fatigue; visual function disorders
Descriptors (secondary) visual displays; questionnaire survey; visual display terminals; refractive errors
Document type D - Periodical articles
Subject(s) Occupational physiology
Broad subject area(s) Physical hazards
Browse category(ies) Fatigue
Diseases of the eye and vision damage