As the results of measurement of the radius of corneal curvature by keratometry for the right eye of 100 subjects, the steep meridian radius is 7.21㎜ to 8.27㎜ and flat meridian is 7.45㎜ to 8.65㎜, for the left eye the steep meridian radius is 7.30㎜ to 8.35㎜, and flat meridian is 7.45㎜ to 8.72㎜. The mean value of radius of corneal curvature is 7.8㎜ for night eye, 7.8㎜ for left eye. The results of measurement of P-value by topography, it is ranged from 0.45 to 0.91 for the night eye, 0.55 to 0.90 for the left eye, mean value is 0.756 for right eye, 0.735 for left eye respectively. That means the corneal shape is ellipses.
The corneal thickness is measured 0.69㎜ 10°degree to the nasal, 0.76㎜ 20°degree to the nasal, 0.66㎜ 10°degree to the temporal, 0.72㎜ 20° degree to the temporal from the visual axis and 0.60㎜ at the central position. The horizontal size of corneal is 11.34㎜ for the night eye, 11.373㎜ for left eye. Those data can be used for contact lens design and fitting.
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