Base curve is the measure of the general shape of a lens. On a spectacle lens, it is the curvature of the front surface and on a contact lens it is the curvature of the back surface.
See corrective lenses for more on spectacle base curve of ophthalmic lenses.
See
External links
* [http://www.opticampus.com/cecourse.php?url=lens_design/#base OptiCampus.com]
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