visual field


Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Wikipedia.
Related to visual field: perimetry, visual acuity, Visual pathway

visual field

The angular extent of space which can be perceived when the head and eyes are kept fixed.
References in periodicals archive ?
However, differences in visual field loss due to RGC damage suggest that there are distinct mechanisms of development and distribution of ischemia.
Automated visual field testing was done in all subjects (Humphrey Field Analyser II, Carl Zeiss Meditec) using the central 30-2, 24-2 threshold program and also by using 10-2 threshold program in patients with central 6o involvement.
Hafed's team has shown that besides the fovea, other parts of the visual field are also 'magnified' in the SC.
A visual field test was also an indication of OCI location, and also guidance for the operation.
Visual field was interpreted using quantitative perimetric indices.
Patients often fail to perceive them since the central visual field loss is rare and it can occur due to hemorrhages of the optic disc, peripapilar retinal or vitreous hemor rhages, or ischemia which affects the retina or the optic nerve [2-7, 11, 12].
An automated visual field test was performed to investigate the visual field defects that the patient complained of.
About 5 percent of the workers in the study had visual field problems.
Thus, glaucoma remains a silent thief until the loss of visual field becomes strong enough for the individual to notice.
Assessment of visual field damage is the main parameter of functional impact of glaucoma with direct relevance to quality of life5.
The committee is satisfied that Miss Dawson did recognise that the visual field plot was abnormal but that she failed to interpret the test results appropriately," said the findings.
The only signs are gradually progressive visual field loss, and optic nerve changes.