Assessment of toroidal surfaces by the measurement of curvature in three fixed meridians.
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.
Fowler
C W
CW
Vision Sciences Department, Aston University, Birmingham, UK.
D000886:Anthropometry; D006801:Humans; D007908:Lens, Crystalline / Q000033:anatomy & histology*; D008433:Mathematics; D012399:Rotation