Screening for convergence insufficiency using the CISS is not indicated in young adults
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  • Published on:
    Quantifying Symptomatology in Convergence Insufficiency Using the Convergence Insufficiency Symptom Survey
    • Eric Borsting, Professor
    • Other Contributors:
      • Susan Cotter, Marjean Kulp, Mitchell Scheiman

    We are in agreement with Horwood and associates that the Convergence Insufficiency Symptom Survey (CISS) was not designed as a screening tool for convergence insufficiency (CI) and thus should not be used as such. However, we would like to point out that their conclusion from their recent paper(1) that the "majority of subjects with clinical signs of CI (reduced convergence and fusional ranges) have no symptoms," is not...

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    Conflict of Interest:
    None declared.