Convergence Insufficiency

Difficulty turning the eyes inward for close work

Overview

Convergence insufficiency is a common binocular vision disorder in which the eyes have trouble working together at near distances. When reading or using a screen, the eyes tend to drift outward, leading to eye strain, headaches, blurred or doubled print, losing place, and difficulty concentrating on close tasks. It is often found in school aged children and young adults but can occur at any age, including after concussion. It is identified through a binocular vision assessment, and office based vision therapy has been studied in randomized trials such as the Convergence Insufficiency Treatment Trial.