Vergence Disorders

Convergence insufficiency is a common problem with the development of moving and focusing the eyes inward on a near object. When we are not able to converge our eyes easily and accurately, we may develop eyestrain, headaches, double vision, difficulty reading and concentrating, avoidance of near work, and dizziness with reading and computer work.

Convergence excess is when the eyes over converge when looking at a near object and are unable to relax the eyes appropriately. This may cause symptoms including eyestrain, headaches, double vision, difficulty reading and concentrating, avoidance of near work, and dizziness, particularly with reading and computer work.

Divergence insufficiency is when the eyes over converge when viewing an object at distance and has difficulty in relaxing the appropriate amount. This condition may lead to headaches, double vision, difficulty concentrating, and dizziness when viewing distance objects such as the board at school or while driving. 

Divergence excess is the eyes' inability to converge on an object at distance and are relaxed too much.This condition may lead to headaches, double vision, difficulty concentrating, and dizziness when viewing distance objects such as the board at school or while driving.  

Unlike our other categories of vergence disorders, exo- and esophoria affect both our distance and near alignment equally and can cause similar symptoms. Exophoria is when our eyes have difficultly crossing when looking at all objects and esophoria is when our eyes have difficulty with relaxing when looking at all objects.