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The accommodative pupil responses of children and young adults at low and intermediate levels of ambient illumination.
Vision Res. 2008 Mar; 48(8):989-93.VR

Abstract

Accommodative pupil constrictions were compared between 27 children (9-10 years) and 13 young adults (22-26 years) in order to clarify the issue whether or not children have such a response. Accommodative stimuli of 4 and 7 diopters were used to elicit the response and experiments were performed at 5 and 100 lux in order to investigate whether the level of ambient light has different effects on developing and mature visual systems. The accommodative pupil response is present in children, but weaker than in adults. Different levels of ambient light lead to only minor additional differences between children and adults. The weaker accommodative pupil response of children may be a consequence of their superior accommodative ranges, which make it unnecessary to close the pupil to increase depth of field. Adults, in contrast, may do better with smaller pupils that reduce accommodative demand because of increased depth of field. A mature human visual system may furthermore be better tuned to handle dimmer and thus noisier images in the photopic range than the developing visual system of a child.

Authors+Show Affiliations

Lund University, Department of Cell and Organism Biology, Zoology Building, Helgonavägen 3, 22362 Lund, Sweden.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18316106

Citation

Gislén, Anna, et al. "The Accommodative Pupil Responses of Children and Young Adults at Low and Intermediate Levels of Ambient Illumination." Vision Research, vol. 48, no. 8, 2008, pp. 989-93.
Gislén A, Gustafsson J, Kröger RH. The accommodative pupil responses of children and young adults at low and intermediate levels of ambient illumination. Vision Res. 2008;48(8):989-93.
Gislén, A., Gustafsson, J., & Kröger, R. H. (2008). The accommodative pupil responses of children and young adults at low and intermediate levels of ambient illumination. Vision Research, 48(8), 989-93. https://doi.org/10.1016/j.visres.2008.01.022
Gislén A, Gustafsson J, Kröger RH. The Accommodative Pupil Responses of Children and Young Adults at Low and Intermediate Levels of Ambient Illumination. Vision Res. 2008;48(8):989-93. PubMed PMID: 18316106.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The accommodative pupil responses of children and young adults at low and intermediate levels of ambient illumination. AU - Gislén,Anna, AU - Gustafsson,Jörgen, AU - Kröger,Ronald H H, Y1 - 2008/03/07/ PY - 2007/10/11/received PY - 2008/01/18/revised PY - 2008/01/24/accepted PY - 2008/3/5/pubmed PY - 2008/6/27/medline PY - 2008/3/5/entrez SP - 989 EP - 93 JF - Vision research JO - Vision Res VL - 48 IS - 8 N2 - Accommodative pupil constrictions were compared between 27 children (9-10 years) and 13 young adults (22-26 years) in order to clarify the issue whether or not children have such a response. Accommodative stimuli of 4 and 7 diopters were used to elicit the response and experiments were performed at 5 and 100 lux in order to investigate whether the level of ambient light has different effects on developing and mature visual systems. The accommodative pupil response is present in children, but weaker than in adults. Different levels of ambient light lead to only minor additional differences between children and adults. The weaker accommodative pupil response of children may be a consequence of their superior accommodative ranges, which make it unnecessary to close the pupil to increase depth of field. Adults, in contrast, may do better with smaller pupils that reduce accommodative demand because of increased depth of field. A mature human visual system may furthermore be better tuned to handle dimmer and thus noisier images in the photopic range than the developing visual system of a child. SN - 0042-6989 UR - https://www.unboundmedicine.com/medline/citation/18316106/The_accommodative_pupil_responses_of_children_and_young_adults_at_low_and_intermediate_levels_of_ambient_illumination_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0042-6989(08)00064-3 DB - PRIME DP - Unbound Medicine ER -