Determining the size of retinal features in prematurely born children by fundus photography
| Autor: | Eija Vesti, Laura Knaapi, Markku T. Leinonen, Tuomo Lehtonen |
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| Rok vydání: | 2014 |
| Předmět: |
genetic structures
Optic Disk Gestational Age Diagnostic Techniques Ophthalmological Fundus (eye) Fundus camera chemistry.chemical_compound Optics Reference Values Photography medicine Birth Weight Humans Macula Lutea Retinopathy of Prematurity Child medicine.diagnostic_test business.industry Blind spot Fundus photography High myopia Retinopathy of prematurity Retinal Temporal macular dragging General Medicine medicine.disease eye diseases ta3125 Axial Length Eye Ophthalmology chemistry Optometry sense organs business Infant Premature |
| Zdroj: | Acta Ophthalmologica. 93:339-341 |
| ISSN: | 1755-375X |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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