Objects that are far, far away from our eyes do not require any convergence, or “crossing-in.” For these distances, both of our eyes are basically pointed straight ahead and in parallel.
When anything is closer to our eyes than around 20 feet, both eyes have to do a certain amount of aiming to prevent the object we are looking at from appearing double. This crossing-in/convergence is even more pronounced up close when we read or do homework and computer work.
A convergence insufficiency is an inability for the eyes to properly aim inward. In these cases the neurological control of this convergence function is improperly developed, diseased, or immature. Symptoms can include blurry vision, double vision, eye strain, and fatigue. This condition is also associated with many other visual disorders, including accommodative problems (near-focusing) and abnormalities in eye alignment.
- Visual Efficiency Exam
- Dilated Health Exam
- Vision Therapy
- Computer Vision Syndrome
- Reading Dynamics Program
- About Convergence – COVD