The patient reported by Van Huet et al. had BCVA of 0.18 logMAR aged 59 and the patient reported by Yuan et al. had BCVA of 0.54 logMAR OD and 0.18 logMAR OS aged 83 [5,25], potentially signifying relative preservation of BCVA in the later stages of disease, thus quantifying maintenance of visual function in patients with foveal sparing disease in RP secondary to pathogenic variants in IMPG2. This evidence concerns the gene IMPG2 and retinitis pigmentosa 1.