trifocals
Related Words
glassesspectacleseyewearlensopticsoptometristophthalmologistprescriptionvisionsightbifocalsmultifocalpresbyopiamyopiahyperopiaastigmatismdiopterframebridgetemplehingenose padglassplasticpolycarbonateacrylicrefractionfocusmagnificationclarityblurdistanceintermediatenearreading glassescornearetinapupilirismaculaoptic nerveaccommodationconvergenceprismcoatingtintshadecaseclothvisual acuityopticiancontact lenscorrectionfocal length