How Does Binocular Vision Work?
Unlike some other animals, humans’ eyes are both set on the front of the face, permitting binocular vision. Each eye has a field of view, which is the area that you can see when you close one eye. The center of the eyes’ fields of view overlap with one another, although visual information in the periphery can only be detected by one eye. This information is transmitted to an area of the brain in the back of the head, which synthesizes the overlapping visual information to make a single coordinated image.
Irlen syndrome is an inherited problem of visual perception that renders about 14 -18% of the population unable to read effectively. Irlen syndrome is not an eye problem. Irlen syndrome is the visual perception site of the brain that does not effectively perceive the synchronization of light waves. The disorder remains undetected by standard educational, visual, and medical tests. It is a learning disability.
Vision and Learning
If your child habitually places her head close to her book when reading, she may have a vision problem that can affect her ability to learn.