Binocular vision refers to the ability of the eyes to work together. The term binocular vision dysfunction describes a misalignment between the lines of sight of each eye.Those with good binocular vision have the ability to point both eyes at the same point in space and to combine the images that their right eye sees with what their left eye sees into a single image.
However, with someone who has binocular vision dysfunction, the eyes are misaligned, and the brain is unable to put together an accurate picture of the combined image from both eyes.
There are many different causes and symptoms of BVD.
Binocular vision dysfunction has a lot of different symptoms that include:
When the eyes don't work together well, the brain will also often adapt by suppressing or filtering out some of the vision in one eye. While this keeps you from seeing double, it can also reduce your ability to perceive depth or 3D vision.
Many people with binocular vision problems have trouble aligning their eyes. The misalignment may be from the eyes crossing inward or drifting apart. It can also be because one eye is aiming higher or lower than the other.
Binocular vision dysfunction can be caused by a wide range of factors. Many people believe it's due to weak eye muscles, but this is almost never the case.
The causes of binocular vision dysfunction include:
Vertical heteropopia is a condition in which the line of sight is higher from one eye than it is from the other. The misalignment (either vertical or horizontal) makes it difficult for the brain to combine the two images taken in by our eyes. This creates difficulties with 3D vision, tracking and much more.
The treatment options differ depending on the severity of the case.
Treatment options may include one or more of the following: