OU stands for Both Eyes (oculus uterque).
What does OU mean?
both eyes
OU stands for both eyes, from the Latin oculus uterque. It appears on prescriptions and eye notes to show that a finding or treatment applies to both eyes. It sits alongside OD (right eye) and OS (left eye). Like the other eye and ear abbreviations, OU is on several do not use lists because it can be confused with similar terms, and writing both eyes in full is often recommended.
When is OU used?
OU appears in ophthalmology and optometry notes and on prescriptions for eye medication, alongside OD and OS.
Frequently asked questions
What does OU stand for?
OU stands for both eyes, from the Latin oculus uterque.
How does OU relate to OD and OS?
OD means right eye and OS means left eye, while OU means both eyes.
Is OU safe to use?
OU is on several do not use lists because it can be confused with similar abbreviations. Writing both eyes in full is safer.
Where is OU used?
It appears on eye prescriptions and notes to show a finding or treatment for both eyes.