1、O.D./O.S.:What you’ll notice fir衡痕贤伎st in your prescription are the abbr髫潋啜缅eviations of Oculus Dexter and Oculus Sinister. These are the latin terms for right eye and left eye respectively. Some prescriptions might even have an additional column labeled O.U. which stands for Oculus Uterque. O.U. refers to both eyes.Abbreviated latin terms are traditionally used in prescriptions for eyeglasses. However nowadays some doctors may use RE (right eye) or LE (left eye) instead of the latin O.D. and O.S.Interesting to know is that O.D. values appear before O.S. values on your prescription. Since your right eye is the first eye that your doctor checks because it is to his left, hence he notes down the right eye value first and then subsequently the left eye readings.
