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TERA | Review of the UI For people with eyesight problems

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Published on May 22, 2012

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Nystagmus is continuous uncontrolled to and fro movement of the eyes. The movements may be in any direction. This means that the eyes will look like they are moving from side to side or up and down or even in circles. Most people with nystagmus have reduced vision.
Nystagmus is a sign of a problem with the visual system or the pathways that connect the eyes to the parts of the brain that analyse vision. These parts of the brain deal with eye movement. It is not really a condition in its own right.
Some types of nystagmus happen when your eye gaze positions are extreme, when you looking far to the left, right, up or down and are a natural part of the way the eye and brain work together. Nystagmus which happens when your eyes aren't in these positions is usually is a sign of a problem.
There are two main types of nystagmus, one which appears in the first months of life which is called "early onset nystagmus" or "congenital nystagmus" and another which develops later in life which is usually called "acquired nystagmus". In many cases the cause of the nystagmus will not be known. Nystagmus is believed to affect between one in 1,000 and one in 2,000 people

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