title: Inspection of back surface aspheric contact lenses.
abstract: Two methods of clinically inspecting and verifying rigid back surface aspheric contact lenses were investigated. A modification of the Radiuscope was found to be an accurate method for making such measurements. Measurement data of a number of aspheric lenses obtained by using this procedure are presented.
mesh_terms: D003261:Contact Lenses / Q000592:standards*; D006801:Humans; D008722:Methods; D055095:Optics and Photonics; D009907:Optometry / Q000295:instrumentation