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    • Ask an Ophthalmologist

  • Does Lens Shape Affect Prism Effectiveness?

    JUL 25, 2013

    Question:

    Can the shape of lenses (rectangular versus oval) undermine the effectiveness of a prism? My new rectangular glasses with prism aren't working properly. It feels like I can't hold my right eye straight at a distance. Previous lenses have always been oval and OK.


    Answer:

    I don't think the shape of the lenses is the problem. However, if the prism is in the wrong axis or direction or not appropriately placed you may have symptoms like these. I would have the glasses checked to make sure they were made correctly; and if so, have the measurements and refraction repeated to verify that the prescription was correct.


    Answered By: Gary S Hirshfield MD

    Double Vision Glasses, Contacts and Vision Correction
  • Ask an Ophthalmologist

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  • Not every question will receive a direct response from an ophthalmologist. However, we will follow up with suggested ways to find appropriate information related to your question. Medical disclaimer

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    Ask a Question

    Not every question will receive a direct response from an ophthalmologist. However, we will follow up with suggested ways to find appropriate information related to your question. Medical disclaimer

    By submitting your question, you agree to be answered by email. Your email address will only be used to answer your question unless you are an Academy member or are subscribed to Academy newsletters.

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