Assistive Medication Administration Personnel (AMAP) Practice Exam

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What is the meaning of the abbreviation "OS"?

  1. Both eyes

  2. Right eye

  3. Left eye

  4. Over the skin

The correct answer is: Left eye

The abbreviation "OS" stands for "oculus sinister," which is Latin for "left eye." In medical and pharmaceutical contexts, these abbreviations are crucial for accurately identifying the specific eye being referred to in prescriptions and treatment plans. Each abbreviation related to eye care has a distinct meaning: for example, "OD" is used for the right eye (oculus dexter), while "OU" refers to both eyes (oculus uterque). The understanding of these terms is essential for preventing errors in medication administration and ensuring proper patient care.