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CHARACTERISTICS OF OPTIC DISC IN HEALTHY SCHOOL CHILDREN
Author(s) -
ERKKILÄ H.,
LAATIKAINEN L.
Publication year - 1979
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.1755-3768.1979.tb01858.x
Subject(s) - medicine , ophthalmology , age groups , birth weight , demography , pregnancy , biology , sociology , genetics
The ophthalmoscopic features of the optic discs were studied in a series of 411 non‐selected school children representing four age groups from 7 to 15 years. The distribution of the cup disc diameter ratios (C/D) showed that in the majority of the eyes (58.8%) the ratio was 0.2‐0.3, independently of the age group. The highest ratio recorded, 0.7, was found in two eyes of the series. An asymmetry of 0.2 or more in the C/D ratios of the eyes was found in 5.2% of the children studied. The correlation between C/D ratio and the age or refraction was not statistically significant although C/D ratio of 0.4 or more was significantly commoner in myopia of ‐2.0 D. or more than in the other eyes. A preponderance of large C/D ratio was also found in children with a birth weight of 2500 g or less but the difference from the distribution in the total series was not significant. Cilioretinal arteries were detected in 17.7% of the eyes and in 27.3% of the subjects studied. In 8.1% of the children the condition was bilateral. In children with a birth weight of 2500 g or less cilioretinal arteries were found in more than half of the cases.