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William


04/25/2012

What do O.S. and O.D. mean in my prescription?

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  • Samuel

    04/25/2012

    The OS is the short letter for "oculus sinister": (LEFT EYE) and OD is short for "oculus dexter" (RIGHT EYE )
  • Olavi

    06/20/2012

    This characters often appear on prescription. Opticians use O.S to stands for left eyes and O.D to stands for right eyes. Besides, on your prescription, you may also see characters like D.V (distance vision), N.V(near vision) and PD (Pupillary Distance) etc.
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