Document Detail

Baseline characteristics in the Myopia Progression Study, a clinical trial of bifocals to slow myopia progression.
MedLine Citation:
PMID:  9703036     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Retrospective studies have indicated that myopic children with nearpoint esophoria experienced slower myopia progression if they wore bifocal glasses rather than single-vision glasses. A small, 18-month clinical trial also supported that finding, but the results were not statistically significant. The Myopia Progression Study was funded by the National Eye Institute to test more rigorously the efficacy of bifocals, compared with single-vision glasses, in slowing myopia progression in children with nearpoint esophoria. A secondary objective of the study was to identify other variables that might influence the rate of myopia progression. This report describes the design and methods of the Myopia Progression Study and the baseline characteristics of the subjects. METHODS: A 3-year, randomized clinical trial was initiated. Subjects were children between 6 and 12 years of age who were myopic (at least -0.50 D in each eye) and who demonstrated nearpoint esophoria by the von Graefe technique. RESULTS: Eighty-two children were enrolled. After blocking by gender and clinical site (two sites), subjects were randomly assigned to one of the two treatments: correction with single-vision spectacle lenses or correction with bifocal lenses having a +1.50 D add in a flattop segment. The average degree of myopia at baseline was -2.31 D (SD = 1.31 D). CONCLUSION: This clinical trial can be expected to determine the effectiveness of bifocal glasses in slowing the progression of myopia in children with nearpoint esophoria.
G W Fulk; L A Cyert; D E Parker
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Publication Detail:
Type:  Clinical Trial; Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Optometry and vision science : official publication of the American Academy of Optometry     Volume:  75     ISSN:  1040-5488     ISO Abbreviation:  Optom Vis Sci     Publication Date:  1998 Jul 
Date Detail:
Created Date:  1998-10-01     Completed Date:  1998-10-01     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8904931     Medline TA:  Optom Vis Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  485-92     Citation Subset:  IM    
College of Optometry, Northeastern State University, Tahlequah, Oklahoma 74464-7017, USA.
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MeSH Terms
Disease Progression
Myopia / physiopathology,  prevention & control*
Visual Acuity
Grant Support

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

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