Convergence Insufficiency: Review of Treatment Trials (Office versus Home Based Treatment) (video)

Convergence insufficiency (CI) is a binocular vision disorder that is characterized clinically by a larger-sized exodeviation at near than at far, a remote near point of convergence (NPC), and deficient positive fusional vergence (PFV) (i.e., convergence amplitudes) at near. It is of clinical consequence because it is associated with a plethora of symptoms, ranging from mild to severe, that when present, are directly related to reading or other near activities. Commonly reported symptoms include diplopia, blur, headaches, eyestrain, tired eyes, words moving on the page, loss of place, and poor concentration with reading and close work.