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How To Interpret Rx

                 How to interpret an eyewear prescription:                 

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        Sphere Cylinder Axis
OD: -400       -125         x180
OS:  -500       -200         x180

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OD means right eye
OS means left eye

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“+” Sphere means farsightedness
“-” Sphere means nearsightedness

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Cylinder means amount of astigmatism

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Axis means the direction of astigmatism, in this case both eyes have horizontal directions

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© 2026 by Dr. Lin Wang Optometrist Office

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