How Do I Read My Glasses Prescription?

Glasses prescriptions ensure that your lenses are made specifically tailored to your eyes. Prescriptions are usually written in a chart format comprised of two rows and five columns. The two rows represent each eye (right and left), while the five columns represent different features that describe your prescription.

The first thing you will see on your prescription are the areas labeled OD and OS. OD stands for oculus dexter, but simply put, OD refers to your right eye. OS stands for oculus sinester or your left eye. Sometimes these terms are replaced with R and L – right and left.

The first thing you will see on your prescription are the areas labeled OD and OS. OD stands for oculus dexter, but simply put, OD refers to your right eye. OS stands for oculus sinester or your left eye. Sometimes these terms are replaced with R and L – right and left.

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