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OCT features of the optic disk parameters and peripapillary nervous fibres layer thickness in children with acquired myopia
Author(s) -
BOYCHUK IM,
GORBATYUK TL
Publication year - 2010
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2010.214.x
Subject(s) - nerve fiber layer , ophthalmology , retinal , medicine , optic disk , optic nerve , refractive error , eye disease
Purpose To reveal morphological and structural peculiarities of retinal nerve fiber layer thickness (RNFLT) and optic nerve parameters in schoolchildren with acquired myopia in dependence of myopia degree. Methods 135 children (270 eyes) of 10‐14 y.o. with bilateral light (86 eyes), moderate (50) and high degree of myopia (42) as well as control group of healthy children (40) were observed. Morphostructural indices (PRNFLTh) in four segments (nasal, temporal, superior, and inferior) and optic disk parameters were investigated by optical coherent tomography SOCT Copernicus, OPTOPOL Tech.Sp.z o.o. applying standard protocols – Retina analysis and Disk analysis. Evaluation of data and comparisons in groups were performed with the help of STATISTICA for Windows 98, a Newman‐Kales criterion was applied. Results Significantly less (p=0,03) peripapillary RNFLT values were found in nasal segments in children with the high degree of myopia as compared to children in control group and with the light degree of myopia. We founded that it depended on Rim Area values. Disk Area (2,08 – 2,16) mm2 was found in 82,7% and above 3,0 mm2 in 17,3% of myopic patients. Disk Area 2,07 ‐ 4,25 mm2 was revealed in myopic patients and 2,08 – 3,11 mm2 in control group. Cup Area was 0,23‐0,54 mm 2 in myopic and 0,38‐1,13 mm2 in healthy children Rim Area 1,2‐3,2 mm2 in myopic and 1,66 – 2,63 mm2 in control group. Cup/Disk ratio 0,19‐1,18 was established in myopic and 0,19 – 1,18 in control group. Conclusion Axial myopia is often accompanied with cone near the optic disk. It is suggested that disk parameters such as – Disk Area and Rim Area can be identified as parameters which can be considered as the signs of myopia progression.