title: Radius of curvature of the posterior surface of the cornea.
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.
authors.affiliation: Department of Optometry and Vision Science, University of Auckland, New Zealand.
authors.forename: L F
authors.initials: LF
authors.lastname: Garner
authors.forename: H
authors.initials: H
authors.lastname: Owens
authors.forename: M K
authors.initials: MK
authors.lastname: Yap
authors.forename: M J
authors.initials: MJ
authors.lastname: Frith
authors.forename: R F
authors.initials: RF
authors.lastname: Kinnear
mesh_terms: D000293:Adolescent; D000886:Anthropometry / Q000379:methods; D002648:Child; D003315:Cornea / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D006801:Humans; D008137:Longitudinal Studies; D009907:Optometry / Q000379:methods; D012029:Refraction, Ocular; D014463:Ultrasonography