What does "OU" stand for in regards to vision?

The abbreviation "OU" comes from the Latin term "oculus uterque," which translates to "both eyes." This term is commonly used in ophthalmology and optometry to refer to prescriptions or conditions that affect both eyes simultaneously. It is important to distinguish this term in the context of eye care, as it indicates treatment or observations relevant to the visual function of both eyes together, rather than focusing on one eye specifically. Understanding this abbreviation is crucial in medical settings to ensure clarity in communication regarding eye health and treatment regimens.