Abstract | PURPOSE: The purpose was to study the effect of prematurity on the macula-disc centre distance and whether it could be used as a reference tool for determining the size of retinal features in prematurely born children by fundus photography. METHODS: The macula-disc centre distance of the left eye was measured in pixels from digital fundus photographs taken from 27 prematurely born children aged 10-11 years with Topcon fundus camera. A conversion factor for Topcon fundus camera (194.98 pixel/mm for a 50° lens) was used to convert the results in pixels into metric units. RESULTS: The macula-disc centre distance was 4.74 mm, SD 0.29. No correlation between ametropia and the macula-disc centre distance was found (r = -0.07, p > 0.05). One child (subject 20) had high myopia and retinopathy of prematurity (ROP), and the macula-disc centre distance was longer than average (6.35 mm). DISCUSSION: The macula-disc centre distance in prematurely born children at the age of 10-11 years provides an easy-to-use reference tool for evaluating the size of retinal features on fundus photographs. However, if complications of ROP, for example temporal macular dragging or high ametropia, are present, the macula-disc centre distance is potentially altered and a personal macula-disc centre distance should be determined and used as a refined reference tool.
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Authors | Laura Knaapi, Tuomo Lehtonen, Eija Vesti, Markku T Leinonen |
Journal | Acta ophthalmologica
(Acta Ophthalmol)
Vol. 93
Issue 4
Pg. 339-41
(Jun 2015)
ISSN: 1755-3768 [Electronic] England |
PMID | 25270671
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | © 2014 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd. |
Topics |
- Axial Length, Eye
- Birth Weight
- Child
- Diagnostic Techniques, Ophthalmological
- Gestational Age
- Humans
- Infant, Premature
- Macula Lutea
(anatomy & histology, pathology)
- Optic Disk
(anatomy & histology, pathology)
- Photography
(methods)
- Reference Values
- Retinopathy of Prematurity
(diagnosis)
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