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The effect of perimetric experience in normal subjets

Heijl, Anders LU ; Lindgren, Georg LU and Olsson, Jonny (1989) In Archives of Ophthalmology 107(1). p.81-86
Abstract
Two groups of normal subjects were submitted to repeated automated static threshold perimetry. Perimetric results were strongly affected by the level of experience in some subjects; in the majority, however, the effect of experience was small. Initial field tests often showed high numbers of depressed points. Sensitivity increased with perimetric training, particularly between the first sessions. Those subjects who improved most started low, gradually approaching normal levels with experience. Learning effects were more pronounced peripherally than paracentrally and "untrained" fields characteristically showed concentric contraction with numerous points with low sensitivity peripherally. An important practical conclusion is to allow... (More)
Two groups of normal subjects were submitted to repeated automated static threshold perimetry. Perimetric results were strongly affected by the level of experience in some subjects; in the majority, however, the effect of experience was small. Initial field tests often showed high numbers of depressed points. Sensitivity increased with perimetric training, particularly between the first sessions. Those subjects who improved most started low, gradually approaching normal levels with experience. Learning effects were more pronounced peripherally than paracentrally and "untrained" fields characteristically showed concentric contraction with numerous points with low sensitivity peripherally. An important practical conclusion is to allow repeated testing of all inexperienced patients in whom initial fields do not agree with clinical findings. A chart showing a concentrically narrowed field should be viewed with particular suspicion. Furthermore, a single initial field may constitute an inadequate baseline for clinical follow-up. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Middle Aged, Perimetry, Reference Values, Sensory Thresholds, Sensitivity and Specificity, Visual Fields, Humans, Adult, Aged
in
Archives of Ophthalmology
volume
107
issue
1
pages
81 - 86
publisher
American Medical Association
ISSN
0003-9950
language
English
LU publication?
yes
id
c459d4c5-234c-4c52-8f5e-7d8a4f351b49 (old id 1215199)
alternative location
http://archopht.ama-assn.org/cgi/content/abstract/107/1/81
date added to LUP
2008-09-22 15:17:00
date last changed
2017-03-15 13:27:03
@article{c459d4c5-234c-4c52-8f5e-7d8a4f351b49,
  abstract     = {Two groups of normal subjects were submitted to repeated automated static threshold perimetry. Perimetric results were strongly affected by the level of experience in some subjects; in the majority, however, the effect of experience was small. Initial field tests often showed high numbers of depressed points. Sensitivity increased with perimetric training, particularly between the first sessions. Those subjects who improved most started low, gradually approaching normal levels with experience. Learning effects were more pronounced peripherally than paracentrally and "untrained" fields characteristically showed concentric contraction with numerous points with low sensitivity peripherally. An important practical conclusion is to allow repeated testing of all inexperienced patients in whom initial fields do not agree with clinical findings. A chart showing a concentrically narrowed field should be viewed with particular suspicion. Furthermore, a single initial field may constitute an inadequate baseline for clinical follow-up.},
  author       = {Heijl, Anders and Lindgren, Georg and Olsson, Jonny},
  issn         = {0003-9950},
  keyword      = {Middle Aged,Perimetry,Reference Values,Sensory Thresholds,Sensitivity and Specificity,Visual Fields,Humans,Adult,Aged},
  language     = {eng},
  number       = {1},
  pages        = {81--86},
  publisher    = {American Medical Association},
  series       = {Archives of Ophthalmology},
  title        = {The effect of perimetric experience in normal subjets},
  volume       = {107},
  year         = {1989},
}