The Measurement and Recording of Vision at Near Test Distances
作者:
Edwin Mehr,
Allan Freid,
期刊:
American Journal of Optometry and Physiological Optics
(OVID Available online 1976)
卷期:
Volume 53,
issue 6
页码: 314-317
ISSN:0093-7002
年代: 1976
出版商: OVID
数据来源: OVID
摘要:
Confusion and misconceptions characterize the designation of near visual acuities because of the numerous systems in use. Most of these systems do not lend themselves to accurate or easy usage or to comparison with other test distances. Use of the M system, with the actual test distances recorded in meters, is suggested as a simplified system for standardization.
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