CRB1 and Retinal dysplasia: Retinal dysplasia associated with mutant Crb1 alleles in mice and rats is characterized by mislocalized photoreceptor cells, shortened photoreceptor outer segments, dysmorphic Müller cells, and the mobilization of immune cells, including microglia and possibly infiltrating macrophages, to the subretinal space [19,35,38,43,51].