What does the abbreviation 'OU' stand for in optometry?

In optometry, the abbreviation 'OU' stands for "Both Eyes." This term is derived from the Latin phrase 'oculus uterque,' which means 'each eye' or 'both eyes.' It is commonly used in prescriptions and exam notes to indicate that the instructions or measurements apply to each eye equally.

Understanding this abbreviation is essential for optometric technicians, as it directly influences how patients' vision prescriptions are interpreted and processed. In contrast, other abbreviations like 'OD' and 'OS' refer specifically to the right eye (Oculus Dexter) and left eye (Oculus Sinister), respectively. Hence, knowing that 'OU' pertains to treating or assessing both eyes ensures clarity in communication and treatment within the optometric practice.