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屈折異常의 統計的 觀察

Statistic Observation of Refractive Error(Ⅱ)

대한안과학회지 1968년 9권 4호 p.21 ~ 25
崔檍 (  ) - 延世大學校 醫科大學 眼科學敎室

金洪福 (  ) - 延世大學校 醫科大學 眼科學敎室
蘇經燮 (  ) - 延世大學校 醫科大學 眼科學敎室

Abstract


Among 8,796 patients seen in the department of ophthalmology Yonsei University Medical Center from August 1, 1965 to July 31, 1968 there were 1, 919 who were seen because of refractive error. These were selected for classification and special statistical study.
In 1962 we reported a similar study of 2,004 patients having errors in refraction among a total of 9,716 patients seen in the same department from August 1, 1958 to July 31, 1961.
The findings of the more recently studied group are compared with the study made in 1962.
1. 1,919 out of 8,796 patients seen in the department of ophthalmology had errors in refraction (21.8%).
2. 2,932(76.3%) had refractive error of the myopic (including simple myopic astigmatism) type. 740(19.4%) were hyperopic (had simple hyperopic astigmatism). The others had a mixed astigmatism.
3.The others had a mixed astigmatism. 3. 56.5% of the total group studied had astigmatism.
4. The highest incidence of refractive errors was found between 11 and 20 years of age. The older patients had a low incidence.
5. There was no relationship between sex and the incidence of refractive error.
6. Among the total number of refractive errors 55. 9% were found to be in myopic patients who had less than a -3.00 diopter error. 18.9% were found among hyperopic patients who had less than a 3.00 diopter error.
7. Among the three types of astigmatic errors seen 970 cases(44. 7 %) were "with the rule"; 864 cases(39.8%) were "against the rule"; and 336 cases (15.5%) were "oblique".
8. 9.6 % of the total refractive errors were those of different types of anisometropia. The most commonly seen type was that of compound myopic anisometropia. The next type seen was compound hyperopic anisometropia and the least frequently seen type was mixed anisometropia.
9. When the results of the present study were compared with those found in 1962 there were no significant differences found between the two groups.

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