Convergence Insufficiency

It is defined as the defect in coordination between two eyes while looking at near object. When eyes look at nearby object both eyes move inward to make the convergence to clear the image but in convergence insufficiency one eye more outward instead of inward which image blurred.

Symptoms

Signs and symptoms include:

Doubling of image (diplopia)
Squinting
Tired
Headaches
Difficulty in concentrating

Causes

The exact cause of this defect is not known yet but it may be assumed that there is a weakness in an extraocular muscle which control the eye movement. There are 6 extraocular muscles which the eye ball in different directions.

Complications

It causes eyestrain which make difficult to concentration due to which child’s learning abilities disturb.

Diagnosis

After taking history your doctor might recommend a following tests:

Perform an eye test to see any vision problem
Take a medical history
Measure the point of convergence
Assess positive fusional vergence

Treatment

The aim of treatment is to reduce the sign and symptoms, treatment options include:

Computer vision therapy to improve the convergence
Reading glasses
Pencil pushups exercise to improve the focus of eyes
Surgery to ressect the weak muscle

Convergence Insufficiency