In contact lens prescriptions, what does "OD" signify?

In contact lens prescriptions, "OD" stands for "oculus dexter," which is a Latin term meaning "right eye." This designation is standard in optometric practice and is used to specify which eye the prescription is intended for. When reading any optometric prescription, "OD" is used consistently to denote the right eye, as opposed to "OS," which indicates the left eye (oculus sinister). Understanding these abbreviations is crucial for interpreting prescriptions accurately and ensuring that patients receive the correct lenses for their right eye.