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Convergence Insufficiency
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Convergence  is the coordinated movement and focus of our two eyes inward on close objects, including phones, tablets, computers, and books.  It is one of many Vital Visual Skills learned during our early years, as we begin to make sense of the world and how to use our eyes to take it all in.

Convergence Insufficiency is a common problem with the development of these skills. When convergence is insufficient, it means that the eyes do not come together closely enough when looking at a near object (dashed lines in above image), so the eyes are essentially looking "past" the target focal point (orange lines).

When we are not able to converge our eyes easily and accurately, problems may develop, such as:

  • Eye strain
  • Headaches
  • Double vision
  • Difficulty reading and concentrating
  • Avoidance of near work
  • Poor sports performance
  • Dizziness or motion sickness


Eye coordination problems like convergence insufficiency generally cannot be improved with eye glasses or surgery. A program of vision therapy may be needed to improve eye coordination abilities, reduce symptoms, and  alleviate discomfort when doing close work.

The American Optometric Association and the 2008 Convergence Insufficiency Treatment Trial clearly support the superiority of office-based vision therapy, supplemented by at-home vision therapy, for treatment of convergence insufficiency.

Locate a Doctor in your area who is experienced and knowledgeable in diagnosing and treating convergence insufficiency.