[Astigmatism analysis on 983 astigmatic eyes between six to seven years children].
OBJECTIVE
To analysis astigmatism from six to seven years old children.


METHODS
To statistical analysis on 983 eyes with astigmatism of > or = 0.5 diopter, which are detected from six or seven-year-old children poor vision acuity examination.


RESULTS
In astigmatism from six to seven years old children the ratio of compound hyperopic astigmatism (AsH) is 62.97%, mixed astigmatism 23.19%; and the ratio of astigmatism with rule is 90.34%, astigatism against the rule 0.14%, oblique astigmatism 9.25%. Grade of astigmatism: the ratio of astigmatism of 0.50 D to 1.00 D is 37.03%, 1.25 D to 2.00 D 34.49%, 2.25 D to 3.00 D 18.62%, 3.25 D to 4.00 D 7.83%, 4.25 D or higher 2.03%. The ratio of binocular astigmatism is up to 80.61%, and the rest with monocular astigmatism is 19.39%.


CONCLUSIONS
Compound hyperopic astigmatism (ASM) is more in six to seven years old children's ASM. The rate of astigmatism with the rule is main in distribution of astigmatism.
Liwan Hospital of Guangzhou Medical College, Guangzhou 510170.
Chunying
C
Gong
Xingzhou
X
Chen
Hua
H
Gong
D001251:Astigmatism / Q000145:classification / Q000453:epidemiology*; D002648:Child; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D015995:Prevalence; D014787:Vision Tests; D014792:Visual Acuity