Term Name:	retinitis pigmentosa 91
Synonyms:	RP91
Definition:	A retinitis pigmentosa characterized by night blindness and constriction of visual fields, with bone-spicule pigmentation, attenuation of retinal vessels, and optic disc pallor on funduscopy that has_material_basis_in heterozygous mutation in the IMPG1 gene on chromosome 6q14.
Ontology:	Human Disease [DOID:0061106]   ( DOID:0061106 )