How to Read Your Eyeglasses Prescription: Key Numbers and What They Mean
To read your eyeglass prescription, find the values for your right eye (OD) and left eye (OS). A minus (-) shows nearsightedness; a plus (+) indicates farsightedness. Check the prescription for diopter strength, as well as sphere, cylinder, axis, and pupillary distance (PD). These details help ensure proper vision correction. Next, the “Cylinder” (Cyl) value … Read more