Definition of OD (lens prescription)
OD (lens prescription): Abbreviation of "oculus dexter." Latin for "right eye." (The words "dexterity" and "dextrous" derive from "dexter" since the right hand is usually more skillful than the left.)
OS stands for "oculus sinister" which is Latin for left eye.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 10/9/2012
Medical Dictionary Definitions A - Z
Search Medical Dictionary
eMedicineHealth Top News
Get breaking medical news.