Motor Congenital Nystagmus

The exact cause of this type of nystagmus is usually never ascertained but a proportion of such cases show recessive inheritance. Other abnormalities might be present, such as mental deficiency, but many children are otherwise entirely normal. The nystagmus tends to be jerky, with the fast phase in the direction of gaze to the right or left. The distance vision is usually impaired to the extent that the patient might never be able to read a car number plate at 23 m. The near vision, on the other hand, is usually good, enabling many patients with this problem to graduate through university.

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