Document Detail

Factors that influence the prevalence of positive catch trials in glaucoma patients.
MedLine Citation:
PMID:  2401419     Owner:  NLM     Status:  MEDLINE    
We evaluated factors that influence the catch-trial response in automated perimetry by consecutively examining 408 glaucoma patients (703 eyes) with either the program 30-2 or a 76-point screen with a quantified defect on the Humphrey Field Analyzer. The prevalence of positive catch trials using both programs was: 15.9% fixation losses, 5.5% false-positives, and 17.0% false-negatives. The only significant difference between the two programs was a lower prevalence of false-negatives on the program 30-2 (P less than 0.01). False-positive responses showed a significant positive correlation to fixation losses, and the catch trial response in general was correlated significantly to defect depth, test time, age, and visual acuity (P less than 0.05). This study suggests that the prevalence of positive catch trials is not an independent variable when testing glaucoma patients with automated perimetry and is not reduced by using a screening strategy over a full-threshold exam.
M Reynolds; W C Stewart; S Sutherland
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv für klinische und experimentelle Ophthalmologie     Volume:  228     ISSN:  0721-832X     ISO Abbreviation:  Graefes Arch. Clin. Exp. Ophthalmol.     Publication Date:  1990  
Date Detail:
Created Date:  1990-10-22     Completed Date:  1990-10-22     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8205248     Medline TA:  Graefes Arch Clin Exp Ophthalmol     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  338-41     Citation Subset:  IM    
Department of Ophthalmology, Medical University of South Carolina, Charleston.
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MeSH Terms
Aged, 80 and over
Fixation, Ocular
Glaucoma / diagnosis*
Middle Aged
Ocular Hypertension / diagnosis*
Predictive Value of Tests
Vision Tests
Visual Fields

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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