Aniridia, cerebellar ataxia, and mental deficiency, called Gillespie disorder, is an incredibly rare inherited disorder that is characterized by the absence, in entire or partially, of the tinted portion of the eye; damaged coordination of voluntary movements due to underdevelopment of the brain's brain; and mental retardation. Some individuals with this disorder also display a delay in the purchase of skills requiring control of muscle and mental activity. The eye problem most regularly linked with this disorder is the partial or total absence of the tinted section of the eye, causing poor vision. The inner side of the iris that normally borders the pupil may be absent, as might be the circular band of muscle fibers in the iris that reduces the dimension of the student in response to light. In many cases, people with aniridia may also exhibit duplicated, involuntary activities of the eye. On top of that, during late youth or early teenage years, the pressure of the liquid in the eye might end up being extraordinarily high in some individuals with aniridia, potentially leading to progressive loss of vision. People with aniridia-cerebellar ataxia-mental deficiency might have extra eye irregularities, such as excessive widening of the pupils and/or extreme level of sensitivity to light. People with this disorder might walk unsteadily and have problem positioning the feet and transforming; they may additionally speak slowly and haltingly, with stops briefly in between each syllable. Affected individuals might additionally display seriously reduced muscle mass tone. The cerebellar ataxia does not appear to get worse in time in individuals with this disorder; as a matter of fact, in many cases, the control of particular voluntary activities may improve with age. In rare cases, people with aniridia-cerebellar ataxia-mental deficiency may have extra physical abnormalities.
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