What does 'O.D.' represent in prescription terminology?

In prescription terminology, 'O.D.' stands for 'Oculus Dexter,' which is Latin for 'right eye.' This term is commonly used when prescribing medications or treatments specifically for the right eye, distinguishing it from 'O.S.' (Oculus Sinister), which refers to the left eye. Understanding these abbreviations is crucial for accurate medication administration, particularly in fields like optometry and ophthalmology, where clarity on which eye is being treated can impact patient outcomes.

In this context, while other options refer to different meanings—such as directions for both eyes, left eye, or oral administration—they do not capture the precise term associated with 'O.D.' in the context of eye prescriptions.