RP is a clinically and genetically heterogeneous group of progressive inherited retinal disorders causing retinal degeneration and affecting 1 in 3000 people.24 The clinical variation reflects differences in the age of onset, progression, retinal appearance and visual outcome.12 Pathogenic variants in RP1 often lead to a truncated protein, but a splice site variant in a long non-coding RNA was linked to Volkmann cataract, where opacities are formed around the lens sutures.25 This indicates the potential importance of RP1 to the lens as well as the retina. This evidence concerns the gene RP1 and retinal degeneration.