OU is an abbreviation that refers to which of the following?

The abbreviation "OU" stands for "oculus uterque," a Latin term meaning "both eyes." This is commonly used in medical prescriptions and notes, particularly in ophthalmology, to indicate that a treatment or medication should be administered to both eyes. Understanding this abbreviation is crucial for accurately following medication administration orders, especially for patients receiving eye treatments or medications.

The other options relate to different medical or daily terms but do not correspond to the abbreviation "OU." For example, "both ears" would be indicated as "AU" (auris uterque), while "sublingual administration" and "as needed" (PRN) use different terminology entirely, making them distinct from the meaning of "OU." Knowing these distinctions is essential for anyone involved in medication administration and healthcare documentation.