Assessment of toroidal surfaces by the measurement of curvature in three fixed meridians

Ophthalmic Physiol Opt. 1989 Jan;9(1):79-80. doi: 10.1111/j.1475-1313.1989.tb00812.x.


A method is described where the surface curvatures and axis orientation of a toroidal surface can be determined by measuring the lens in three fixed orientations. This method also has possible applications in the measurement of progressive addition lenses.

Publication types

  • Comment

MeSH terms

  • Anthropometry
  • Humans
  • Lens, Crystalline / anatomy & histology*
  • Mathematics
  • Rotation