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What is OU vision?

Published in Eye Health & Vision 1 min read

OU vision, in the context of an eye prescription, refers to the vision in both eyes.

Here's a more detailed explanation:

Understanding OU in Eye Prescriptions

OU is an abbreviation used in optometry and ophthalmology, commonly found on prescriptions for eyeglasses or contact lenses. It is derived from the Latin term "oculus uterque," which directly translates to "both eyes." This abbreviation indicates that the prescription applies to both eyes simultaneously.

Abbreviation Meaning Latin Origin
OU Both Eyes Oculus Uterque
OD Right Eye Oculus Dexter
OS Left Eye Oculus Sinister

Example:

If your prescription shows the same values for OU, it signifies that both eyes require the same correction.

Practical Implications

  • Eyeglasses: When the OU entry specifies a certain lens power, it means that this lens power is prescribed for both lenses in your eyeglasses.

  • Contact Lenses: For contact lenses, OU indicates that the parameters listed are applicable to lenses for both eyes.