Document Detail

Visual-evoked response binocular summation in normal and strabismic infants. Defining the critical period.
MedLine Citation:
PMID:  1987094     Owner:  NLM     Status:  MEDLINE    
Pattern visual-evoked response binocular summation (VERBS) was recorded in normal infants, between the ages of 1-58 months, and in similar-aged esotropic infants before and at various times after corrective surgery. The normal subjects had no significant VERBS at 1.5 months of age, developed a rapid acceleration of VERBS between 1.5-3 months, and then gradually declined in VERBS from 3-58 months. The peak of the VERBS by age function at 3 months was well in the facilitation range (greater than 2.0) and corresponded to the general age range for the onset of binocular eye alignment, fusion, and stereopsis. The results from the early-onset esotropic patients revealed a similar function to that found in normal subjects; however, the function was triggered by surgical eye alignment. The peak of the VERBS function for esotropic subjects was lower than normal, and the initial rise was less rapid. It is proposed that the VERBS function reflects the human critical period for the development of binocular vision. In this framework, data from both infant developmental studies and adult studies were clarified.
L E Leguire; G L Rogers; D L Bremer
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Investigative ophthalmology & visual science     Volume:  32     ISSN:  0146-0404     ISO Abbreviation:  Invest. Ophthalmol. Vis. Sci.     Publication Date:  1991 Jan 
Date Detail:
Created Date:  1991-02-15     Completed Date:  1991-02-15     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7703701     Medline TA:  Invest Ophthalmol Vis Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  126-33     Citation Subset:  IM    
Department of Ophthalmology, Children's Hospital, Columbus, Ohio 43205.
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MeSH Terms
Child, Preschool
Depth Perception / physiology
Esotropia / physiopathology*,  surgery
Evoked Potentials, Visual / physiology*
Eye / growth & development*,  physiopathology
Ocular Physiological Phenomena
Pattern Recognition, Visual
Vision, Binocular / physiology*
Grant Support

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