Document Detail

The pattern electroretinogram (PERG) with contralateral corneal reference.
MedLine Citation:
PMID:  11396398     Owner:  NLM     Status:  MEDLINE    
The pattern electroretinogram (PERG) is a sensitive test for investigation of the proximal retina. For monocular recording, the contralateral corneal reference (CCR) electrode position has been suggested as a possible alternative to the conventional ipsilateral temporal reference (ITR). We therefore compared the effect of these electrode positions on 26 subjects (median age 45.5 years, IQR 24.5-61.5). The signals were recorded monocularly with DTL nylon fibre electrodes. The visual stimuli were high contrast 19' black-white checkerboard patterns, reversing 4 times/s. PERG responses obtained from the CCR gave larger amplitudes and the increase in amplitude was statistically significant (P < 0.001). Because the CCR signal is larger, new normative ranges must be established to avoid false negative results.
Y H Aldebasi; N Drasdo; R V North; J E Morgan
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article    
Journal Detail:
Title:  Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)     Volume:  21     ISSN:  0275-5408     ISO Abbreviation:  Ophthalmic Physiol Opt     Publication Date:  2001 May 
Date Detail:
Created Date:  2001-06-08     Completed Date:  2001-06-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8208839     Medline TA:  Ophthalmic Physiol Opt     Country:  England    
Other Details:
Languages:  eng     Pagination:  243-6     Citation Subset:  IM    
Department of Optometry and Vision Sciences, Cardiff University, P.O. Box 905, King Edward VII Avenue, Cardiff, Wales CF10 3YJ, UK.
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MeSH Terms
Electroretinography / instrumentation,  methods,  standards
Middle Aged
Reference Values
Retina / physiology*
Sensitivity and Specificity

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