What does the abbreviation 'O.S.' mean in relation to dosing?

The abbreviation 'O.S.' stands for "oculus sinister," which translates to "left eye" in Latin. In the context of medication dosing, this term is used when prescriptions or instructions are specifically referring to the left eye for applications or treatments. Understanding this abbreviation is crucial for ensuring that medications are administered to the correct eye, which is especially important in nursing and medication administration.

Other options may refer to various dosing regimens or forms of medication, but they do not align with the established medical terminology that 'O.S.' represents in relation to dosing or administration instructions. Recognizing and understanding these common abbreviations will enhance effective communication and safe medication practices in healthcare settings.