Results 271 to 280 of about 1,734,374 (297)
Some of the next articles are maybe not open access.
ABNORMALITIES OF THE VISUAL FIELDS
JAMA: The Journal of the American Medical Association, 1924Our object in this paper is to discuss methods of examination of the visual fields, to emphasize the value of graphic records, and to stimulate neurologic interest in an ophthalmologic field, as well as to present in outline certain clinical cases.
Samuel D. Ingham, Theodore C. Lyster
openaire +3 more sources
Archives of Ophthalmology, 1967 The actual influence of the nose on the nasal visual field was examined by perimetric studies. Regardless of size of target stimulus or position of the face, the nasal 180° meridian could not be expanded beyond 64°. No significant differences were found in the extent of nasal field amongst Caucasians, Orientals, and Negroes. Scotopic isopters similarly
openaire +2 more sources
MEASUREMENT OF THE VISUAL FIELD
Perceptual and Motor Skills, 2003There is increasing evidence that concurrent visual and nonvisual tasks not only reduce the size but also result in systematic deformation of the visual field. Given such complex changes in the visual field, appropriate representation and measurement of its shape is all important.
openaire +3 more sources
Archives of Ophthalmology, 1959
I. Introduction The clinician commonly evaluates the macula by examination with various optical instruments and by testing visual acuity. We are all aware of the frequent inconsistencies between visual acuity and the objective information obtained by careful fundus examination.
Rittler Mc, Campbell Cj
openaire +3 more sources
I. Introduction The clinician commonly evaluates the macula by examination with various optical instruments and by testing visual acuity. We are all aware of the frequent inconsistencies between visual acuity and the objective information obtained by careful fundus examination.
Rittler Mc, Campbell Cj
openaire +3 more sources
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.
openaire +2 more sources
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
openaire +3 more sources
"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
openaire +3 more sources
Sensitization of the visual field.
Journal of Experimental Psychology: Human Perception and Performance, 1984Three experiments investigated the identification or localization of a letter that was displaced from the fixation point by 1 degree-3 degrees. The subject's task was to identify a fixated letter and identify (Experiment 1) or localize (Experiments 2 and 3) the displaced letter.
Robert Egly, Donald Homa
openaire +3 more sources
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
openaire +2 more sources
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
openaire +2 more sources
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).
openaire +2 more sources
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.
openaire +2 more sources
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.
openaire +2 more sources