Clinical Research
Age-related changes in ocular torsion measurement in children
Pang Lin, Cao Yiwen
Published 2016-03-10
Cite as Chin J Pract Ophthalmol, 2016, 34(3): 250-253. DOI: 10.3760/cma.j.issn.1006-4443.2016.03.011
Abstract
ObjectiveTo measure the foveal location in relation to the optic disc in 3 and 6 years-old children.
MethodsMeasurement of optic disc size, horizontal and vertical distance between foveal and optic disc, disc-foveal angle in fundus photographs of 77 children (37 subjects with the age of 3 years and 40 subjects with the age of 6 years). Statistic analysis was done to show the correlation between two groups of children.
ResultsThe 3 years group: Mean optic disc horizontal diameter was 1.91±0.17mm; mean vertical diameter was 2.06±0.21 mm. Mean horizontal distance between fovea and optic disc was 5.24±0.27 mm, mean vertical distance between fovea and optic disc was 0.63±0.33 mm. The fovea was located 2.74±0.27 disc diameter (PD) temporal to the center of optic disc and 0.30±0.15PD below the horizontal to the center of the optic disc. Mean disc-foveal angle was 6.82°±3.57°. The 6 years group: Mean optic disc horizontal diameter was 1.88±0.19 mm, mean vertical diameter was 2.01±0.19 mm. Mean horizontal distance between fovea and optic disc was 5.06±0.26 mm, mean vertical distance between fovea and optic disc was 0.54±0.30 mm. The fovea was located 2.71±0.28 PD temporal to the center of optic disc and 0.27±0.16PD below the horizontal to the center of the optic disc. Mean disc-foveal angle was6.22°±3.58°. There was statistically difference in horizontal distance between fovea and optic disc between 3 years children and 6 years children.
ConclusionsThe size of optic disc and vertical distance between fovea and optic disc in children shows significantly variable. There are no difference in disc-foveal angle between 3 years children and 6 years children.
Key words:
Children; Disc-foveal angle; Eye growth
Contributor Information
Pang Lin
Department of Pediatric Ophthalmology, Peking University First Hospital, 100034, Beijing, China
Cao Yiwen