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What is the meaning of OD in prescription

Author

David Jones

Published Apr 22, 2026

When you look at your prescription for eyeglasses, you will see numbers listed under the headings of OS and OD. They are Latin abbreviations: OS (oculus sinister) means the left eye and OD (oculus dextrus) means the right eye. Occasionally, you will see a notation for OU, which means something involving both eyes.

What is the meaning of OD and BD in prescription?

OD. Daily. BD. Twice a day. TDS (or TD or TID)

What does OD stand for in pharmacy?

hs (hora somni) means “at bedtime” od (oculus dexter) means “right eye” os (oculus sinister) means “left eye”

What is the meaning of OD in medical terms?

Medicine. OD or o.d., an abbreviation used in medical prescriptions for omne in die or “once daily” both meaning “take once every day” Doctor of Optometry (O.D.) Oculus dexter, ocular dexter, or ocularis dexter, meaning “right eye” in general ophthalmologic or optometric usage, particularly in eyeglass prescriptions.