Abstract
Retinitis pigmentosa (RP) is a heterogeneous group of inherited retinal dystrophies characterized by progressive degeneration of rod and cone photoreceptors. The worldwide prevalence of the disease is 1/4000. The earliest symptom in RP is most commonly night blindness, followed by concentric visual field loss. Central vision loss occurs later in life due to cone dysfunction. Photoreceptor responses measured with an electroretinogram are reduced or undetectable. Optical coherence tomography shows a progressive loss of outer retinal layers and fundus autofluorescence imaging reveals alteration autofluorescence in a characteristic pattern. Mutations in more than 80 different genes have been associated with non-syndromic RP. The heterogeneity of RP makes it challenging to describe the clinical findings. The objective of this review is to provide an overview of the clinical characteristics and diagnosis of RP.
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