What does the abbreviation OD stand for?

What does the abbreviation OD stand for?

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

Answer: (C)

OD is the ophthalmology shorthand for the right eye, coming from the Latin Oculus Dexter, where dexter means right. In eye care, OD indicates the right eye on prescriptions and records, while OS means the left eye (Oculus Sinister) and OU means both eyes. The other options point to the ear or the left eye, so they don’t apply in this eye-care notation—the correct interpretation is Oculus Dexter, the right eye.

OD is the ophthalmology shorthand for the right eye, coming from the Latin Oculus Dexter, where dexter means right. In eye care, OD indicates the right eye on prescriptions and records, while OS means the left eye (Oculus Sinister) and OU means both eyes. The other options point to the ear or the left eye, so they don’t apply in this eye-care notation—the correct interpretation is Oculus Dexter, the right eye.