Document Detail


The effect of stimulus duration upon the components of fluctuation in static automated perimetry.
MedLine Citation:
PMID:  1478304     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We studied the effect of varying the stimulus duration time on the components of fluctuation in static automated perimetry by testing 20 healthy subjects on the Humphrey Field Analyser within the central 20 degrees of vision. We found the total fluctuation at a stimulus duration of 0.065 s, to be 3.22 decibels (dB); 0.1 s, 3.22 dB; 0.2 s, 3.34 dB; 0.3 s, 2.95 dB; 0.4 s, 3.24 dB; and 0.5 s, 3.22 dB. Little difference was observed in the individual components (short-term, long-term homogeneous, long-term heterogeneous and inter-individual) or total fluctuation with an increasing stimulus presentation time when evaluated over the entire visual field or in a pointwise fashion. This study suggests that the stimulus duration within the range of times studied has little effect on the components or total fluctuation in healthy individuals.
Authors:
G E Pennebaker; W C Stewart; J A Stewart; H H Hunt
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Eye (London, England)     Volume:  6 ( Pt 4)     ISSN:  0950-222X     ISO Abbreviation:  Eye (Lond)     Publication Date:  1992  
Date Detail:
Created Date:  1993-02-11     Completed Date:  1993-02-11     Revised Date:  2009-11-03    
Medline Journal Info:
Nlm Unique ID:  8703986     Medline TA:  Eye (Lond)     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  353-5     Citation Subset:  IM    
Affiliation:
Department of Opthalmology, Medical University of South Carolina, Charleston.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Female
Humans
Male
Perimetry / instrumentation,  methods*
Physical Stimulation
Sensory Thresholds / physiology
Time Factors

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


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