Aspheric curvatures for the human lens
作者： Michael J. Howcroft , John A. Parker
DOI: 10.1016/0042-6989(77)90157-2
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摘要: Abstract Spheric and aspheric conic functions were calculated for cross-sections from 60 pairs of human cadaver lenses subjected to cryofixation. For the anterior surface, mean radius was 7.3 ± 0.3mm with a hyperbolic constant 2.46 0.13 . The posterior 5.35 0.14mm parabolic 1.09 0.07 Curvatures generally decreased age; constant| a/b | remained relatively age.
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