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Perimetric variability: importance of criterion level.

Journal article
Authors Lars Frisén
Published in Documenta ophthalmologica. Advances in ophthalmology
Volume 70
Issue 4
Pages 323-30
ISSN 0012-4486
Publication year 1988
Published at Department medicine
Pages 323-30
Language en
Keywords Adolescent, Adult, Aged, Computer Graphics, Humans, Middle Aged, Visual Acuity, Visual Field Tests, standards, Visual Fields
Subject categories Ophthalmology, Neurology


Perimetry suffers from considerable variability of results. A new technique for estimating individual criterion levels in normal subjects exposes the important role of psychological variables. The analysis depends on features peculiar to acuity perimetry. It can be accommodated in the regular examination. The results can be used to compensate for practice effects in serial examinations and to tighten the range of normal limits. The reduction in variation between normal subjects amounted to 57 per cent.

Page Manager: Webmaster|Last update: 9/11/2012

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