Results 201 to 210 of about 1,227,912 (222)
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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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Optometry and Vision Science, 2005
"Looked-but-failed-to-see" errors are a common cause of accidents, but it has never been determined whether obstructive elements within an automobile (e.g., window posts or the interior rearview mirror) have actually been an obstacle to vision. This work describes a technique that can easily be used to determine the available visual field of drivers at
Miguel A. García-Pérez +1 more
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"Looked-but-failed-to-see" errors are a common cause of accidents, but it has never been determined whether obstructive elements within an automobile (e.g., window posts or the interior rearview mirror) have actually been an obstacle to vision. This work describes a technique that can easily be used to determine the available visual field of drivers at
Miguel A. García-Pérez +1 more
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Proceedings of the 9th Augmented Human International Conference, 2018
Current practices in visual field tests require skilled eye care professionals and expensive machine setup in a controlled environment [1], thus, limit their availability within eye care clinics and hospitals. With a low-cost Virtual Reality (VR) device and its immersive capability, we developed Visual Field Visualizer (VFV), a prototype VR system that
Ngoc Thi Nguyen +2 more
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Current practices in visual field tests require skilled eye care professionals and expensive machine setup in a controlled environment [1], thus, limit their availability within eye care clinics and hospitals. With a low-cost Virtual Reality (VR) device and its immersive capability, we developed Visual Field Visualizer (VFV), a prototype VR system that
Ngoc Thi Nguyen +2 more
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Visual Fields: Field Interpretation
2009The individual (or single field) printout (Fig. 17.1) contains a wealth of information to help clinicians decide whether the visual field is abnormal and specifically the likelihood of it being a glaucomatous visual field. The printout can be divided into four convenient parts to aid interpretation (Fig. 17.1).
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Optometry and Vision Science, 1976
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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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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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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1984
Publisher Summary This chapter discusses different tests for checking the visual field. Visual field testing must include testing the best central vision, that is, the visual acuity. If, with distance glasses, the patient reads down the chart leaving off the first letters of each row with the left eye and the last letters with the right eye, a ...
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Publisher Summary This chapter discusses different tests for checking the visual field. Visual field testing must include testing the best central vision, that is, the visual acuity. If, with distance glasses, the patient reads down the chart leaving off the first letters of each row with the left eye and the last letters with the right eye, a ...
openaire +2 more sources