Comparison of optic disk features in preterm and term infants.

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dc.contributor.author Kuruvilla, Shilpa Elizabeth en
dc.contributor.author Simkin, Samantha en
dc.contributor.author Welch, Sarah en
dc.contributor.author Dai, Shuan en
dc.date.accessioned 2018-10-22T22:29:58Z en
dc.date.issued 2018-10 en
dc.identifier.issn 1091-8531 en
dc.identifier.uri http://hdl.handle.net/2292/43116 en
dc.description.abstract PURPOSE:To compare the optic disk features of preterm and term infants. METHODS:Digital fundus images of preterm infants were compared with those of infants born at term, imaged within 1 week of birth. The optic disk horizontal diameter to vertical diameter ratio, the disk-macula to disk-diameter ratio, and the presence or absence of double ring sign was noted. RESULTS:Images of 649 infants (324 preterm and 325 term) were analyzed. Of the preterm infants, 129 (40%) had a double ring sign, compared to 4% in term infants. The double ring was seen more frequently in infants of European descent and was more common with younger gestational age. The mean horizontal to vertical disk diameter in preterm infants on first examination was 0.75 ± 0.063, increasing to 0.80 ± 0.069 at final examination. Term infants had a horizontal to vertical disk diameter ratio of 0.79 ± 0.064. At final examination, the ratio of disk-to-macula distance to the horizontal disk diameter was 3.9 in preterm infants and 3.7 for term infants. CONCLUSIONS:In our study population preterm infants often had a double ring sign around the optic disk in the absence of optic nerve hypoplasia. Preterm disks tend to be more vertically oval, which becomes less oval closer to term. The mean disk-to-macula to disk-diameter ratio among normal preterm infants was higher than previously reported. en
dc.format.medium Print-Electronic en
dc.language eng en
dc.relation.ispartofseries Journal of AAPOS : the official publication of the American Association for Pediatric Ophthalmology and Strabismus en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.subject Optic Disk en
dc.subject Fundus Oculi en
dc.subject Macula Lutea en
dc.subject Humans en
dc.subject Birth Weight en
dc.subject Retrospective Studies en
dc.subject Gestational Age en
dc.subject Infant en
dc.subject Infant, Newborn en
dc.subject Infant, Premature en
dc.subject Female en
dc.subject Male en
dc.title Comparison of optic disk features in preterm and term infants. en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.jaapos.2018.04.008 en
pubs.issue 5 en
pubs.begin-page 376 en
pubs.volume 22 en
dc.rights.holder Copyright: The author en
pubs.end-page 380.e2 en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Journal Article en
pubs.elements-id 751829 en
pubs.org-id Medical and Health Sciences en
pubs.org-id School of Medicine en
pubs.org-id Ophthalmology Department en
dc.identifier.eissn 1528-3933 en
pubs.record-created-at-source-date 2018-07-27 en
pubs.dimensions-id 30048679 en


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