In ophthalmic prescriptions, the abbreviation O.S. denotes which eye?

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Multiple Choice

In ophthalmic prescriptions, the abbreviation O.S. denotes which eye?

Explanation:
Eye designations on ophthalmic prescriptions use Latin terms. O.S. stands for Oculus Sinister, meaning the left eye. The right eye is Oculus Dexter, and both eyes are Oculus Uterque. So O.S. specifically indicates the left eye.

Eye designations on ophthalmic prescriptions use Latin terms. O.S. stands for Oculus Sinister, meaning the left eye. The right eye is Oculus Dexter, and both eyes are Oculus Uterque. So O.S. specifically indicates the left eye.

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