What do the letters "OD" and "OS" stand for in optometry?

The letters "OD" and "OS" in optometry stand for "Oculus Dexter," which refers to the right eye, and "Oculus Sinister," which refers to the left eye. These Latin terms are used universally in eye care to differentiate between the two eyes during examinations, prescriptions, and medical documentation.

Understanding these terms is essential for any optometry practice as they help in accurately communicating information about a patient's vision. For instance, when an optometrist prescribes corrective lenses, they will specify the power needed for both the right and left eye using these abbreviations. This standardization helps avoid confusion and ensures that patient care is efficient and effective.

The other options do not reflect the established terminology used in the field. The incorrect alternatives may include terms that do not pertain to optical practice or are not recognized abbreviations in optometry.