منابع مشابه
Central visual field in diabetes.
Little detailed work has been reported on the central visual field in diabetes. Scott (I957) stated that "the causation of scotomata by endogenic toxins is extremely rare"; DuboisPoulsen (1952) reported a study of diabetic patients using rod scotometry (Livingston, 1943) in which central field scotomata were found in eyes with no visible retinopathy. The original reference to diabetic patients ...
متن کاملPerceived length in the central visual field: evidence for visual field asymmetries
Visual performance for judging the length of a simultaneously presented pair of radial lines, reciprocally opposed by 180 degrees at a central fixation point, was assessed for 24 radial positions of test lines, for three viewing conditions (binocular, left and right monocular) and five different standard line sizes (1.43-7.13 degrees ). Generally, the results showed underestimation of the test ...
متن کاملFoveal dysfunction and central visual field loss in glaucoma.
OBJECTIVE To determine whether foveal function distal to the ganglion cell layer is an independent predictor of central visual field function in glaucoma. SETTING University affiliated hospital and private practice. PARTICIPANTS Twenty-seven eyes (27 patients) with normal-pressure glaucoma, 10 eyes (10 patients) with primary open-angle glaucoma, and 47 eyes of 47 matched normal volunteers. ...
متن کاملEvaluation of Central and Peripheral Visual Field Concordance in Glaucoma
PURPOSE The purpose of this study was to characterize the extent to which central visual field (VF) loss reflects peripheral VF loss in patients with varying degrees of glaucoma severity. METHODS A total of 232 patients with glaucoma or suspect glaucoma completed static central VF testing using the 24-2 pattern and peripheral VF testing using the suprathreshold 30-60 pattern. Points from 24-2...
متن کاملReceptive-field dynamics in the central visual pathways.
Neurons in the central visual pathways process visual images within a localized region of space, and a restricted epoch of time. Although the receptive field (RF) of a visually responsive neuron is inherently a spatiotemporal entity, most studies have focused exclusively on spatial aspects of RF structure. Recently, however, the application of sophisticated RF-mapping techniques has enabled neu...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1969
ISSN: 0007-1161
DOI: 10.1136/bjo.53.1.16