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[Astigmatism analysis on 983 astigmatic eyes between six to seven years children]
Chunying Gong1, Xingzhou Chen, Hua Gong
1Liwan Hospital of Guangzhou Medical College, Guangzhou 510170.
Purpose:
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%.
Conclusion:
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.
