Convergence Insufficiency

What is Convergence Insufficiency?

Convergence Insufficiency (CI) is a common near vision problem that interferes with the person’s ability to see, read, learn and work at close distances. The eyes do not work together while trying to focus on an object nearby.


Not everyone experiences the same symptoms but below are some common symptoms a person might experience if they have convergence insufficiency. These symptoms usually occur when trying to read or do work up close (reading, computer work or desk work).

  • Eye Strain
  • Headaches
  • Blurred Vision
  • Diplopia (double vision)
  • Difficulty reading- Words seem to drift or move on page
  • Difficulty concentrating/Short attention span
  • Squinting or closing one eye to focus better
  • Trouble remembering what was read

When to see a doctor

A basic eye exam or screening with a 20/20 eye chart is not sufficient for detecting a functional vision problem like convergence insufficiency. A comprehensive vision exam by a developmental optometrist is necessary for detecting vision problems. A person can still see 20/20 but have convergence insufficiency.


Convergence Insufficiency can be easily treated with the use of prism eyeglasses which can relieve some of the symptoms or with one of the most successful treatments, in-office Vision Therapy with home reinforcement.

Our Nashville office offers Vision Therapy. If you or a loved one experiences any of these symptoms, please call us (615-386-3036) or schedule a comprehensive exam online (here) with one of our eye doctors.