When directed to use "OU", which part of the body is the medication being administered to?

The abbreviation "OU" stands for "oculus uterque," which is a Latin term meaning "both eyes." In medical and pharmaceutical contexts, when a prescription or direction states to use "OU," it indicates that the medication should be applied or administered to both eyes simultaneously. This is a common instruction for eye drops or ointments that are meant to treat conditions affecting both eyes. Understanding such abbreviations is crucial for accurate administration of medications, especially in fields like pharmacy where precise dosages and instructions are important for patient safety.