J Korean Ophthalmol Soc.
1977 Mar;18(1):39-44.
Relationships bttween Corneal Curvatures and Refractive Errors in Korea
- Affiliations
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- 1Department of Ophthalmology, Kyung Hee University, School of medicine, Seoul, Korea.
Abstract
- The purpose of this stastical evaluation was to detect the differences or relationship between the diopters and corneal curvature. The objects were 1761 eyes (890 persons) visited to the eye department, Kyung Hee University Hospital during 22 months from June 1974 to April 1976, of which refractive power was myopic over minus 1 diopter by skiascopy. It was stastically analyzed the relationships between the diopters and curvatures of the cornea, mean and standard deviation, standard error, coefficient of variation, and coefficient of correlation which were obtained by means of student-t test. The following-results were obtaind; 1) The consistent differences in the mean values of horizontal curvature and those of vertical curvature by each diopter were proved to be significant (p<0.05). 2) There were no differences in the horizontal curvature to each diopter (not significant). 3) The differences in the means of vertical curvature between each diopters of the -1.00 ~ 6.75D. was not significant. But the differences between the diopters of the -7.00 ~ -18.00D. and the -1.00 ~ -6.75D. was significant. 4) Dividing the samples by groups of -1.00 ~ -2.75D. (A), -3.00 ~ -6.75D. (B), and -7.00 ~ -18.00D. (C), the differences in the horizontal curvatures between these 3 groups were not significant. 5) The differences in the vertical curvature between group-A and group-B were not stastically significant. But there were significant either between group-B and group-C or between group-A and group-C (p<0.05).
