Sector Retinitis Pigmentosa: Extending the Molecular Genetics Basis and Elucidating the Natural History

•This is the largest series and longitudinal study in sector retinitis pigmentosa.•The genotypic spectrum of the disease is broader than previously reported.•The longitudinal data provided more accurate patient prognosis and counseling.•The study informed patients' potential participation in the increasing numbers of trials of novel therapeutics and access to future treatments.