The Development of Accommodation

We investigated the roles that blur, proximity and vergence cues play in the development of accommodation. Accommodative responses to targets incorporating one or more of these cues were measured for four adults and eight infants at 1.5 and 3 months of age using eccentric photorefraction. Adults sho...

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Bibliographic Details
Published in:Vision research (Oxford) 1997-06, Vol.37 (11), p.1525-1533
Main Authors: CURRIE, DEBRA C., MANNY, RUTH E.
Format: Article
Language:English
Subjects:
Accommodation
Accommodation, Ocular - physiology
Adult
Biological and medical sciences
Child development
Convergence, Ocular
Cues
Developmental psychology
Female
Fundamental and applied biological sciences. Psychology
Humans
Infant
Infant – Proximal accommodation – Proximal vergence
Lenses
Light
Male
Newborn. Infant
Pattern Recognition, Visual - physiology
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Refraction, Ocular
Vision, Binocular - physiology
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Summary:We investigated the roles that blur, proximity and vergence cues play in the development of accommodation. Accommodative responses to targets incorporating one or more of these cues were measured for four adults and eight infants at 1.5 and 3 months of age using eccentric photorefraction. Adults showed accurate accommodation to blur cues, and variable accommodation with proximity cues alone. Some infants at both ages showed fixed accommodative responses to all stimulus conditions. Others responded consistently in the correct direction for pattern targets at different distances, but made poorer responses when blur was presented in conflict with distance. Binocular viewing improved the accommodative responses in only some infants. © 1997 Elsevier Science Ltd.
ISSN:0042-6989
1878-5646
DOI:10.1016/S0042-6989(97)85022-5