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Usher syndrome

Usher syndrome is an inherited condition that affects both hearing and vision. The symptoms of Usher syndrome consist of childhood-onset hearing loss, progressive vision loss caused by degeneration of the retina (retinitis pigmentosa), and sometimes balance problems.

Knowledge-base: Alstrom syndrome

Alstrom syndrome

Alstrom syndrome is an inherited condition which affects many body systems.

Retina UK Knowledge-base: Refsum syndrome

Refsum syndrome

Refsum syndrome is an inherited metabolic condition, associated with elevated phytanic acid plasma levels, which impacts many body systems.

Knowledge-base, Bardet-biedl syndrome

Bardet-Biedl syndrome (BBS)

Bardet-Biedl syndrome (BBS) is an inherited condition which impacts many parts of the body including the retina.

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Charles Bonnet syndrome

Charles Bonnet syndrome (CBS) causes people who have lost a lot of sight to see things that aren’t real (hallucinations).

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NARP syndrome

People with NARP (Neuropathy, Ataxia and Retinitis Pigmentosa) syndrome have neurological (muscle weakness, epilepsy and memory problems) and balance problems in addition to retinitis pigmentosa.

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Bassen-Kornweig syndrome

In this condition, retinitis pigmentosa is accompanied by progressive neurological problems, abnormal red blood cells (acanthocytosis) and defective bowel absorption of fat, leading to very low blood levels of cholesterol and absent beta lipoprotein (Abetalipoproteinaemia).