Abstract
The radius of curvature of the posterior surface of the cornea was measured in the vertical meridian for 120 children aged 6 to 17 years, using 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 anterior to posterior corneal radius was 1.210 ± 0.045 or 0.827 ± 0.029 when expressed as a reciprocal. There was a significant correlation between the anterior and posterior corneal radius (y = 0.798x + 0.228, r2 = 0.45). The study provides data that may be applied to a four-surface schematic eye.
Original language | English |
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Pages (from-to) | 496-498 |
Number of pages | 3 |
Journal | Optometry and Vision Science |
Volume | 74 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Jul 1997 |
Externally published | Yes |
Keywords
- Posterior corneal surface
- Purkinje images
- Schematic eyes
ASJC Scopus subject areas
- Ophthalmology
- Optometry