What does "OU" refer to in eye care terminology?

In eye care terminology, "OU" is an abbreviation of the Latin term "oculus uterque," which means "both eyes." This term is commonly used by eye care professionals when prescribing glasses or contact lenses, or when discussing conditions that affect both eyes simultaneously. The use of "OU" helps to clarify that the treatment, assessment, or observations apply to both eyes, rather than being limited to just one.

In contrast, the other options denote specific eyes: "OD" stands for the right eye (oculus dexter), while "OS" refers to the left eye (oculus sinister). "Neither eye" does not pertain to any recognized medical abbreviation in ocular terminology. Understanding these terms is essential for effective communication in eye care and ensuring that patients receive accurate and comprehensive treatment for their visual needs.