What does the abbreviation AD stand for?

What does the abbreviation AD stand for?

• A. Right ear (auris dextra)
• B. Left ear
• C. Oculus dexter (right eye)
• D. Oculus sinister (left eye)

Answer: (A)

In medical shorthand, AD comes from the Latin auris dextra, which means the right ear. The opposite is auris sinistra (AS) for the left ear. Eye abbreviations use Oculus dexter (OD) for the right eye and Oculus sinister (OS) for the left eye, not AD. So the abbreviation AD correctly refers to the right ear.

In medical shorthand, AD comes from the Latin auris dextra, which means the right ear. The opposite is auris sinistra (AS) for the left ear. Eye abbreviations use Oculus dexter (OD) for the right eye and Oculus sinister (OS) for the left eye, not AD. So the abbreviation AD correctly refers to the right ear.