Which term corresponds to the definition 'Right eye'?

Which term corresponds to the definition 'Right eye'?

• A. o.d
• B. a.d.
• C. o.s.
• D. a.u.

Answer: (A)

The right eye is labeled with the Latin term oculus dexter, shortened to o.d. in medical shorthand. Dexer means right, while sinister means left, and uterque means both. So o.d. pinpoints the right eye clearly. The left eye would be oculus sinister (o.s.), and both eyes would be oculus uterque (o.u.). The forms a.d. and a.u. refer to auris dextra and auris uterque, which are the ears, not the eyes, so they aren’t used for ophthalmology. In exams, prescriptions, or chart notes, you’ll see o.d. used to indicate the right eye, ensuring there’s no mix-up between eyes.

The right eye is labeled with the Latin term oculus dexter, shortened to o.d. in medical shorthand. Dexer means right, while sinister means left, and uterque means both. So o.d. pinpoints the right eye clearly. The left eye would be oculus sinister (o.s.), and both eyes would be oculus uterque (o.u.). The forms a.d. and a.u. refer to auris dextra and auris uterque, which are the ears, not the eyes, so they aren’t used for ophthalmology. In exams, prescriptions, or chart notes, you’ll see o.d. used to indicate the right eye, ensuring there’s no mix-up between eyes.