Stereoacuity Testing
| Autor: | William L. Larson, Michel Bolduc, Jacques Gresset, Louis Thibault |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
Adult
Male Vision Disparity genetic structures media_common.quotation_subject Visual Acuity Illusion Retina Rod Optics Humans media_common Depth Perception Optical Illusions business.industry Optical illusion Vision Tests Space perception Illusions humanities Stereoscopic acuity Ophthalmology Stereopsis Binocular disparity sense organs business Psychology Optometry |
| Zdroj: | Optometry and Vision Science. 65:632-636 |
| ISSN: | 1040-5488 |
| DOI: | 10.1097/00006324-198808000-00007 |
| Popis: | When stereoacuity was measured, some subjects (but not all) saw the two vertical rods of the test to be tilted. The perceived tilt indicated that the top of a rod was nearer to or farther from the observer than the bottom. Sometimes one rod appeared tilted and sometimes both. It was rare for both to appear tilted in the same direction. There are 9 possible tilt combinations including both rods vertical. All were observed but only 1 of the 3 subjects observed them all. In some instances, the frequency with which a particular tilt combination was seen was influenced by which rod was nearer and by the binocular disparity presented by the rods. During a stereoacuity test, tilt can confuse the identification of the nearer rod. Uncertainty is avoided by regarding the middle of the rods. Lines drawn on paper were also seen to tilt by some subjects. |
| Databáze: | OpenAIRE |
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