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Assessment of toroidal surfaces by the measurement of curvature in three fixed meridians |
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| Authors: | C.W. Fowler |
| Affiliation: | Vision Sciences Department, Aston University, Birmingham, UK. |
| Abstract: | 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. |
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