trifocal
pl: trifocals
Related Words
bifocalmonofocalmultifocallensglassesspectaclesopticsoptometristophthalmologistvisionsightpresbyopiamyopiahyperopiaastigmatismrefractiondiopterfocusfocalaccommodationcornearetinapupilirismaculacrystalline lensintraocular lenscataractphacoemulsificationimplantsurgerycorrectionmagnificationdistanceintermediatenearreading glassesframebridgetempleeyeglassprismconvexconcavecurvatureoptical axisconvergencedivergenceblurclarityacuityvisual fieldprescriptionopticiancontact lensadditivesegmentscleravitreous humoraqueous humorfoveaoptic nerveblind spotbinocularmonocularrefractive indexdiffractionaberrationspherical aberrationchromatic aberrationlightphotonwavelength