Convergence Insufficiency

What is convergence insufficiency?

Convergence insufficiency is a visual disorder that impacts the ability of your eyes to coordinate effectively when focusing on nearby objects. This condition can lead to symptoms such as blurred or double vision when attempting to view items up close, such as reading a book or looking at a smartphone display.

Typically, convergence insufficiency begins during childhood, but it can also develop in individuals of any age following a brain injury, such as a concussion.

If you are experiencing convergence insufficiency, seeking prompt treatment can enhance the coordination of your eyes.

What are the symptoms of convergence insufficiency?

Individuals with convergence insufficiency frequently encounter visual difficulties during close-range tasks, such as reading or working on a computer. The most prevalent symptoms include:

  • Eye fatigue or discomfort

  • Blurred vision

  • Double vision

  • Headaches

  • Difficulty maintaining focus

You may also find reading challenging. You might struggle to keep your place, read at a slower pace, or feel as though the words are shifting or floating on the page.

If your child is affected by convergence insufficiency, you might observe that they face challenges while reading or engaging in other close-up tasks. They may:

  • Squint frequently

  • Rub their eyes often

  • Close one eye

If your child exhibits any of these signs, it is crucial to consult with their eye care professional. Parents and educators may mistakenly believe that children with convergence insufficiency are simply struggling with reading or learning; however, it is actually a visual issue that requires appropriate treatment.

What causes convergence insufficiency?

Convergence insufficiency occurs when the nerves responsible for controlling the muscles of the eyes do not function properly.

Under normal circumstances, when you focus on an object that is close, both of your eyes should converge inward. However, individuals with convergence insufficiency may find that one eye diverges outward when attempting to focus on nearby objects.

In many instances, the exact cause of convergence insufficiency remains unknown to medical professionals. Nevertheless, studies indicate that this condition is frequently observed following a brain injury or concussion.

How will your doctor check for convergence insufficiency?

Your eye care provider will likely begin by inquiring about your symptoms. They may ask whether you experience blurred or double vision, headaches, eye fatigue, or difficulties concentrating during close-up tasks.

Additionally, they will conduct several tests to evaluate:

  • The degree to which your eyes converge toward your nose before you experience double vision or one eye begins to diverge

  • The likelihood of your eyes diverging when focusing on objects that are both near and far

  • The efficiency with which your eyes can transition from focusing on nearby objects to distant ones

It is possible to have perfect vision yet still experience convergence insufficiency, which is why a standard eye examination may not detect this condition.

What’s the treatment for convergence insufficiency?

Convergence insufficiency can be addressed through a form of vision therapy known as convergence exercises. This often involves collaborating with a specialist to practice focusing on objects at varying distances. You can also perform exercises at home. In some cases, a specific type of eyewear called prism glasses may be utilized as part of the treatment. In rare instances, surgical intervention may be necessary to strengthen the eye muscles.

You might not see immediate improvements following treatment. It can take 12 weeks or longer to notice any changes in your vision. Additionally, your symptoms may reappear after illness, insufficient sleep, or extensive close-up activities.