Publication Date:
1978-10-20
Description:
Photorefraction of a sample of 93 infants of ages 1 day to 12 months showed that 63 percent of the subjects had astigmatism of 0.75 diopter or greater, and 12 percent greater than 2 diopters. Seventy percent of these astigmatisms were in the horizontal-vertical meridians. By comparison, only 8 percent of a sample of 26 adults tested by the same method showed astigmatism (all 0.75 to 1 diopter). The high incidence of infant astigmatism has implications for critical periods in human visual development and for infant acuity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Howland, H C -- Atkinson, J -- Braddick, O -- French, J -- New York, N.Y. -- Science. 1978 Oct 20;202(4365):331-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/694540" target="_blank"〉PubMed〈/a〉
Keywords:
Adult
;
Age Factors
;
Astigmatism/*diagnosis/epidemiology
;
Humans
;
Infant
;
Infant, Newborn
;
Infant, Newborn, Diseases/*diagnosis
;
Photography
;
Refraction, Ocular/*methods
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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