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Norrie disease

Norrie disease is an inherited eye disorder that leads to blindness in male infants at birth or soon after birth. It causes abnormal development of the retina, the layer of sensory cells that detect light and colour, with masses of immature retinal cells accumulating at the back of the eye. As a result, the pupils appear white when light is shone on them, a sign called leukocoria. The irises (colored portions of the eyes) or the entire eyeballs may shrink and deteriorate during the first months of life, and cataracts (cloudiness in the lens of the eye) may eventually develop.

Descrição

Norrie disease is an inherited eye disorder that leads to blindness in male infants at birth or soon after birth. It causes abnormal development of the retina, the layer of sensory cells that detect light and colour, with masses of immature retinal cells accumulating at the back of the eye. As a result, the pupils appear white when light is shone on them, a sign called leukocoria. The irises (colored portions of the eyes) or the entire eyeballs may shrink and deteriorate during the first months of life, and cataracts (cloudiness in the lens of the eye) may eventually develop.

About 30 percent of individuals with Norrie disease develop progressive hearing loss, and 30 to 50 percent of people affected experience developmental delays in motor skills such as sitting up and walking. Other problems may include mild to moderate intellectual disability, often with psychosis, and abnormalities that can affect circulation, breathing, digestion, excretion, or reproduction.

Padrões de herança

The source lists the following possible inheritance patterns: X-linked recessive. More than one pattern can apply in different cases.

Other names

Anderson-Warburg syndrome

Atrophia bulborum hereditaria

Congenital progressive oculo-acoustico-cerebral degeneration

Episkopi blindness

Fetal iritis syndrome

Norrie syndrome

Norrie's disease

Norrie-Warburg syndrome

Oligophrenia microphthalmus

Pseudoglioma congenita

Whitnall-Norman syndrome

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  • 18 de ago de 2020 | Última versão
  • 1 Mar 2020 | Publicado originalmente

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