Results 321 to 330 of about 352,043 (365)
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Optometry and Vision Science, 1976
ABSTRACT Diminishing telescope systems designed to widen the field of view of patients with tunnel vision are described. Theoretical analysis suggests that telescope systems will greatly improve visual search times and diminish the difficulties of such patients.
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ABSTRACT Diminishing telescope systems designed to widen the field of view of patients with tunnel vision are described. Theoretical analysis suggests that telescope systems will greatly improve visual search times and diminish the difficulties of such patients.
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The Visual Field: Simultaneous Order in Immediate Visual Awareness
2014When you open your eyes in bright daylight, you become visually aware of the scene in front of you. That is to say, generically, for you might be blind, hallucinate, and so forth. To many people visual awareness appears three-fold extended in space, and evolving over time. One makes out objects and processes in intricate interrelations.
Koenderink, Jan +2 more
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Visual Fields: Visual Field Test Strategies
2009The question can be answered in many ways. First of all, there are visual field devices used to perform automated static perimetry and those for manual kinetic perimetry. Automatedtests utilize computer programs to vary test speed, target size, and luminance.
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Visual processing throughout the visual field
Proceedings SIBGRAPI'98. International Symposium on Computer Graphics, Image Processing, and Vision (Cat. No.98EX237), 2002This paper summarizes work done in our laboratory with a special emphasis on functional aspects of the visual field. The quality of the perceived image within a visual display depends on the information available within the display itself but also on the capacity of the human visual system to process visual information.
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Visual field in hysteria-reliability of visual field by Goldmann perimetry
Documenta Ophthalmologica, 1989Four cases with hysterical amblyopia in youngsters under 15-year-old showed the poor reproducibility of visual field, that is, when the same target was moved from the periphery toward the fixation ten times along the same meridian during the same examination, the position of the plotted points were rather variable.
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Functional visual field of patients with visual field loss.
Japanese journal of ophthalmology, 1985To assess the capability of perceiving forms in patients with visual field loss, a concept of functional visual field was introduced based on determinations of the time required for pattern recognition. Two series of stimulus patterns were made of Japanese syllabic hiragana characters drawn with black dots in the background of open circles of various ...
F, Ikeda, M, Ikeda, S, Shioiri, M, Takao
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The subtlety of simple eyes: the tuning of visual fields to perceptual challenges in birds
Philosophical Transactions of the Royal Society B: Biological Sciences, 2014Graham R Martin
exaly