Convergence Insufficiency

Convergence Insufficiency is a sensory and neuromuscular anomaly of the binocular vision system, characterized by an inability to converge the eyes (turn the eyes in) or sustain convergence. Convergence insufficiency disorder can interfere with the ability to read, learn, and work at near (close distances). Convergence Insufficiency is a common condition and treatment is very effective at any age.

Treatments range from passive (prism lenses) to active (vision therapy)
Eye surgery is generally not recommended.
A person can pass the 20/20 eye chart test and still have Convergence Insufficiency.
The pediatrician basic eye exam not adequate for the detection of Convergence Insufficiency (as well as other visual conditions).

There is a threefold incidence of Convergence Insufficiency in the ADHD population. The results suggest that school-aged children with symptomatic accommodative dysfunction or Convergence Insufficiency have a higher frequency of behaviors related to poor school performance and attention.