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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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    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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