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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.

A man looking into an eye examination device

Alstrom syndrome

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

A man looking into an eye examination device

Achromatopsia

Achromatopsia is a rare hereditary vision disorder resulting in an absence of colour vision along with additional visual problems.