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Relative dispersion...
Relative dispersion analysis enhances perimetric sensitivity.
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- Frisén, Lars, 1939 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för klinisk neurovetenskap,Institute of Clinical Neurosciences
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Rossitti, S (author)
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(creator_code:org_t)
- 1996
- 1996
- English.
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In: Vision research. - 0042-6989. ; 36:3, s. 491-7
- Related links:
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https://gup.ub.gu.se...
Abstract
Subject headings
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- Objective identification of minor visual field defects is problematic. A possible solution is to examine spatial correlations by means of relative dispersion analysis, a tool of fractal analysis. We studied patients with glaucoma, previous optic neuritis, chiasmal compression and lesions of the brain hemispheres, using high-pass resolution perimetry. One-hundred visual field records were drawn consecutively for each category and ranked according to severity of defects. Records with scores ranking below the 35th percentile, i.e. those with the smallest field defects, were analysed. Relative dispersion analysis recognized 1.3-2.4 times more abnormal subjects than did pattern standard deviation. A previously described form index was intermediate in sensitivity. Specificity was 96%. Relative dispersion analysis appears to capture a novel aspect of visual field abnormality, with good sensitivity and specificity. The analysis is easily performed.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Neurologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Neurology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Oftalmologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Ophthalmology (hsv//eng)
Keyword
- Adolescent
- Adult
- Aged
- Aged
- 80 and over
- Brain Diseases
- physiopathology
- Child
- Glaucoma
- physiopathology
- Humans
- Middle Aged
- Optic Chiasm
- physiopathology
- Optic Neuritis
- physiopathology
- Pituitary Neoplasms
- physiopathology
- Sensitivity and Specificity
- Vision Disorders
- diagnosis
- Visual Field Tests
- Visual Fields
Publication and Content Type
- ref (subject category)
- art (subject category)
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