Retinitis pigmentosa: for professionals
Retinitis pigmentosa is a genetically heterogenous group of inherited retinal dystrophies mainly characterised by predominant rod impairment initially followed by subsequent cone dysfunction. Over 80 genes have been attributed to RP resulting in significant clinical heterogeneity. 20-30% of patients have syndromic RP. The most common are Usher syndrome and Bardet-Biedl syndrome.