1.56 Index High Cylinder Finished Single Vision Glasses Optical Lens; Prescription Lenses, Find Details and Price about High Cylinder Glasses Lens 1.56 Prescription Lenses from 1.56 Index High Cylinder Finished Single Vision Glasses Optical Lens; Prescri
1. OD and OS These measurements indicate the correction required for your right eye (OD, “oculus dexter“) and left eye (OS, “oculus sinister“). 2. Sphere (SPH) The SPH, or sphere, measures the amount of lens power prescribed to correct nearsightedness or farsightedness. ...