Pigeons' Near-Field Visual Acuity for Hi-Vision Video Monitor
نویسندگان
چکیده
منابع مشابه
Screening for Significant Refractive Error Using a Combination of Distance Visual Acuity and Near Visual Acuity
PURPOSE To explore the effectiveness of using a series of tests combining near visual acuity (NVA) and distance visual acuity (DVA) for large-scale screenings for significant refractive error (SRE) in primary school children. METHOD Each participant underwent DVA, NVA and cycloplegic autorefraction measurements. SREs, including high myopia, high hyperopia and high astigmatism were analyzed. C...
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Near vision has been studied from many aspects. Galton, in 1885, tested the farthest distance at which four-point type could be read in 7,000 persons, from six to 81 years of age. He concluded that the near visual acuity improved rapidly from childhood to a maximum at the age of 20 years, then de clined very gradually till the age of 45 years, and more rapidly thereafter. Chapanis, in 1950, ch...
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ژورنال
عنوان ژورنال: Japanese Journal of Animal Psychology
سال: 1996
ISSN: 0916-8419,1880-9022
DOI: 10.2502/janip.46.61