Umeå University's logo

umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Chromatic pupillometry in children
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Ophthalmology.
2018 (English)In: Frontiers in Neurology, E-ISSN 1664-2295, Vol. 9, article id 669Article in journal (Refereed) Published
Abstract [en]

Chromatic pupillometry is a technique that is increasingly used to assess retinal disorders. As age may be one of the various factors which can influence the pupillary light reaction, this study aimed to evaluate the pupil responses to colored light stimuli in the pediatric population. Fifty-three children with normal vision and without any history of ocular disorders were tested with a portable pupillometer. Four test sequences were used: five dim blue (470 nm) stimuli presented in half log steps ranging from -3.15 to -1.15 log cd/m(2) after 3 min of dark adaptation, five red (622 nm) stimuli of -1.15, -0.7, -0.15, 0.3, and 0.85 log cd/m(2) after 1 min light adaptation, one bright blue stimulus of 2.2 log cd/m(2) and one bright red of 2 log cd/m(2). The results were grouped by age: a younger group included 27 children aged from 3 to 10 years old and an older group included 26 from 10 and 1 month to 18 years old. The younger group had a smaller pupil diameter after dark adaptation compared with the older group. A linear regression defining the photopic threshold showed that younger subjects had a higher threshold, e.g., needed a brighter red stimulus to evoke a threshold pupil response comparable that of subjects. Age thus seems to influence outer retinal sensitivity at least as evaluated by the pupillary photopic threshold intensity. The post-illumination pupillary reaction was used as a marker of intrinsic melanopsin activity and did not show any difference between the two age groups.

Place, publisher, year, edition, pages
Frontiers Media S.A., 2018. Vol. 9, article id 669
Keywords [en]
pupil, chromatic pupillometry, children, pupillary light reaction, growth
National Category
Ophthalmology Neurology
Identifiers
URN: urn:nbn:se:umu:diva-151389DOI: 10.3389/fneur.2018.00669ISI: 000441937500001PubMedID: 30174642Scopus ID: 2-s2.0-85052950095OAI: oai:DiVA.org:umu-151389DiVA, id: diva2:1245934
Available from: 2018-09-06 Created: 2018-09-06 Last updated: 2023-08-28Bibliographically approved

Open Access in DiVA

fulltext(1395 kB)190 downloads
File information
File name FULLTEXT01.pdfFile size 1395 kBChecksum SHA-512
2e46b1a385cfb67fa378d8fa622ae169551924e70c1669746c9a49f486a294c4c621c70d789a68b3aed62743ec2bd120ea4632b8e301b7a073ec8615d0375d4a
Type fulltextMimetype application/pdf

Other links

Publisher's full textPubMedScopus

Authority records

Domellöf, Fatima Pedrosa

Search in DiVA

By author/editor
Domellöf, Fatima Pedrosa
By organisation
Ophthalmology
In the same journal
Frontiers in Neurology
OphthalmologyNeurology

Search outside of DiVA

GoogleGoogle Scholar
Total: 190 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 298 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf