RADIUS OF CURVATURE OF THE POSTERIOR SURFACE OF THE CORNEA

The radius of curvature of the posterior surface of the cornea was mea sured in the vertical meridian for 120 children aged 6 to 17 years, us ing a Purkinje image method, The mean radius of curvature (+/-SD) was 6.42 +/- 0.31 mm, with a range from 5.62 to 7.22 mm, The ratio of ante rior to posterior corneal radius was 1.210 +/- 0.045 or 0.827 +/-: 0.0 29 when expressed as a reciprocal, There was a significant correlation between the anterior and posterior corneal radius (y = 0,798x + 0.228 , r(2) = 0.45), The study provides data that may be applied to a four- surface schematic eye.