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The accommodative pupil responses of children and young adults at low and intermediate levels of ambient illumination.

Gislén, Anna LU ; Gustafsson, Jörgen and Kröger, Ronald LU (2008) In Vision Research 48(8). p.989-993
Abstract
Accommodative pupil constrictions were compared between 27 children (9-10years) and 13 young adults (22-26years) 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 100lux 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... (More)
Accommodative pupil constrictions were compared between 27 children (9-10years) and 13 young adults (22-26years) 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 100lux 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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Vision Research
volume
48
issue
8
pages
989 - 993
publisher
Elsevier
external identifiers
  • wos:000255526100002
  • pmid:18316106
  • scopus:41049112636
ISSN
1878-5646
DOI
10.1016/j.visres.2008.01.022
language
English
LU publication?
yes
id
c3019a40-a3ef-4344-86cb-614f91b3a59a (old id 1052844)
date added to LUP
2008-04-28 14:35:52
date last changed
2017-05-21 03:45:54
@article{c3019a40-a3ef-4344-86cb-614f91b3a59a,
  abstract     = {Accommodative pupil constrictions were compared between 27 children (9-10years) and 13 young adults (22-26years) 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 100lux 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.},
  author       = {Gislén, Anna and Gustafsson, Jörgen and Kröger, Ronald},
  issn         = {1878-5646},
  language     = {eng},
  number       = {8},
  pages        = {989--993},
  publisher    = {Elsevier},
  series       = {Vision Research},
  title        = {The accommodative pupil responses of children and young adults at low and intermediate levels of ambient illumination.},
  url          = {http://dx.doi.org/10.1016/j.visres.2008.01.022},
  volume       = {48},
  year         = {2008},
}