Document Detail

Accommodation in infants as measured by photorefraction.
MedLine Citation:
PMID:  3447363     Owner:  NLM     Status:  MEDLINE    
We developed a video camera photorefractive procedure that allows on-line monitoring of accommodation from a distance of 1-2m, and have used it to study accommodation in twenty-nine 2- to 10-month-old human infants. We presented square wave gratings and random checkerboard targets at 25, 33, 50, and 100 cm from the infant. All infants altered their accommodation in the appropriate direction for changing target distances. We also presented infants with a slowly rotating circular striped target. We did not observe any systematic change in accommodation of the astigmatic infants to the rotating striped target, nor any significant change in their accommodation to stationary targets as a function of target type. Measured speeds of accommodation in infants were at least 4.6 D/sec, comparable to that found for adults.
H C Howland; V Dobson; N Sayles
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  27     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1987  
Date Detail:
Created Date:  1988-05-13     Completed Date:  1988-05-13     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  2141-52     Citation Subset:  IM    
Section of Neurobiology and Behavior, Cornell University, Ithaca, NY 14853.
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MeSH Terms
Accommodation, Ocular*
Age Factors
Astigmatism / physiopathology
Pattern Recognition, Visual / physiology
Time Factors
Video Recording
Vision Tests / methods*
Grant Support

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