Distribution of the Axis of Astigmatism According to Age in Children .
- Author:
Hyo Churl SONG
;
Jung Yoon KWON
- Publication Type:Original Article
- Keywords:
Astigmatism;
Children;
Distribution
- MeSH:
Adolescent;
Astigmatism*;
Atropine;
Axis, Cervical Vertebra*;
Child*;
Humans;
Incidence
- From:Journal of the Korean Ophthalmological Society
1999;40(9):2597-2603
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
We performed this study to investigate the distribution of axes of astigmatism, the occurrence and amount of astigma- tism among pediatric population aged from 1 to 15 years who have visited our clinic from January to December 1997. After routine ophthalmologic examination to rule out any organic abnormality, the cycloplegic refraction was performed with 0.5-1.0% atropine on 529 eyes. Out of 529 eyes, astigmatism was found in 356 eyes (67.3%) with the highest incidence in 15-year-old group being 87.0%. Among 356 eyes with astigma- tism, with-the-rule astigmatism was found in 322 eyes (90.4%); against-the-rule, 30 eyes (8.5%); oblique, 4 eyes (1.1%). With-the-rule astigmatism occurred far more frequently found than against-the-rule in all age groups. As to the type of astigmatism classified by the state of refractive errors,hyperopic astigmatism was found in 144 eyes (40.4%); myopic,136 eyes (38.3%); mixed, 76 eyes (21.3%). Of the total of 356 eyes with astigmatism, astigmatism of 1.0 diopter or less was found in 181 eyes (50.8%).
