Nystagmus: involuntary, rhythmical, repeated oscillations of one or both eyes
One routine test the optometrists use is for eye position and movement. Observing the movements of the 12 muscles the move the eye the patient looks at nine different directions. They might have to be asked to follow a target and the doctor must then follow closely watch the eyes move. Any oddities could be muscle weakness or paralysis. Alinism is a genetic condition that results in a lack of pigmentation in the eyes skin and hair. Numerous problems with sensitivity to light in the eyes and skin. The gene prevents the body from producing the pigment called melanin.
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