Similarly, viral delivery of CNTF improved photoreceptor survival in the Rho-/- mouse model of RP (Liang et al., 2001; Lipinski et al., 2015), diabetic retinopathy (Aires et al., 2019) and retinal detachment (Gao et al., 2020). This evidence concerns the gene CNTF and retinitis pigmentosa 1.