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Convergence Insufficiency

Convergence Insufficiency

Convergence Insufficiency (CI) is a common binocular (two-eyed) vision disorder in which the eyes do not work at near easily. An eye teaming problem in which the eyes have a strong tendency to drift outward when reading or doing close work (exophoria at near). If the eyes do drift out, the person is likely to have double vision.

To prevent double vision, the individual exerts extra effort to make the eyes turn back in (converge). This extra effort can lead to a number of frustrating symptoms which interfere with the ability to read and work comfortably at near.

Symptoms

  • eyestrain (especially with or after reading)
  • headaches
  • blurred vision
  • double vision
  • inability to concentrate
  • short attention span
  • frequent loss of place
  • squinting, rubbing, closing or covering an eye
  • sleepiness during the activity
  • trouble remembering what was read
  • words appear to move, jump, swim or float

Treatment

Convergence insufficiency can often be treated by practicing convergence through exercises. These exercises are prescribed by an orthoptist (a medical technician who is specifically trained in ocular muscle function and binocular vision) or by an ophthalmologist.

Most studies show that a short course of treatment is usually successful.