Document Detail

Vergence orthoptics: validity and persistence of the training effect.
MedLine Citation:
PMID:  1891195     Owner:  NLM     Status:  MEDLINE    
The validity and permanence of orthoptic treatment for vergence deficiencies requires investigation due to the subjective nature of determining success in most clinical cases, i.e., the amelioration of symptoms and increases in vergence ranges. The relation between Risley prism vergences, a subjective measure, and vergence tracking rate, an objective index, is investigated. The course of orthoptics progress is compared in cases of clinical vergence dysfunction. Vergence-deficient control subjects showed no significant change in either index. However, trained subjects demonstrated rapid increases in both indices. The persistence of the training effect was monitored for up to 9 months. No regression was observed in subjects who met all release criteria, but one subject who chose to terminate therapy early showed a slow regression in tracking rate and recurrence of symptoms. These data support the validity of vergence training and increase the plausibility of previous clinical reports of orthoptics success.
J D Grisham; M C Bowman; L A Owyang; C L Chan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optometry and vision science : official publication of the American Academy of Optometry     Volume:  68     ISSN:  1040-5488     ISO Abbreviation:  Optom Vis Sci     Publication Date:  1991 Jun 
Date Detail:
Created Date:  1991-10-15     Completed Date:  1991-10-15     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8904931     Medline TA:  Optom Vis Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  441-51     Citation Subset:  IM    
School of Optometry, University of California, Berkeley.
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MeSH Terms
Convergence, Ocular*
Equipment Design
Orthoptics* / instrumentation
Strabismus / therapy*

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

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