What does AU indicate in terms of eye or ear administration?

The abbreviation "AU" stands for "auris uterque" in Latin, which translates to "both ears." This designation is used in medical terminology to indicate that a treatment or medication should be administered to both ears when the context is related to ear administration.

When considering the administration of medications, particularly in an ophthalmic (eye) or otic (ear) context, it's important to identify the correct anatomy being addressed. In this scenario, "AU" specifically refers to ears, distinguishing it from other abbreviations used for eye administration. For instance, "OD" indicates the right eye, "OS" indicates the left eye, and "OU" signifies both eyes.

Understanding these abbreviations is crucial for proper medication administration, ensuring that patients receive the correct treatment in the appropriate quantity and location, thereby enhancing efficacy and safety in clinical practices.