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Figure 1 - Humphrey field analyser. Humphrey field analyser (HFA) is a tool for measuring the human visual field that is commonly used by optometrists, orthoptists and ophthalmologists, particularly for detecting monocular visual field. [1] The results of the analyser identify the type of vision defect.
A visual field test is an eye examination that can detect dysfunction in central and peripheral vision which may be caused by various medical conditions such as glaucoma, stroke, pituitary disease, brain tumours or other neurological deficits.
The visual field is "that portion of space in which objects are visible at the same moment during steady fixation of the gaze in one direction"; [1] in ophthalmology and neurology the emphasis is mostly on the structure inside the visual field and it is then considered “the field of functional capacity obtained and recorded by means of perimetry”.
A History of the Mind received positive reviews from the science journalist Marek Kohn in New Statesman and Society, [4] Francisca Goldsmith in Library Journal, [5] and from Publishers Weekly, [6] mixed reviews from the biologist Lewis Wolpert in New Scientist and the psychologist George Armitage Miller in The New York Times Book Review, [7] [8] and negative reviews from John C. Marshall in ...
It is a diagnostic tool that aids in the detection of visual disturbances caused by changes in the retina, particularly the macula (e.g. macular degeneration, Epiretinal membrane), as well as the optic nerve and the visual pathway to the brain. Amsler grid usually help detecting defects in central 20 degrees of the visual field. [2]
Pages in category "Spanish-language books" The following 15 pages are in this category, out of 15 total. This list may not reflect recent changes. 0–9.
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