abnormal retina horizontal cell density decreased retina horizontal cell density 2020-10-29T12:27:46Z reduced retina horizontal cell density MP:0031187 decreased retinal horizontal cell density decreased horizontal cell density reduced horizontal cell density decrease of the density of the laterally interconnecting neurons in the outer plexiform layer of the retina that connect rods of one part of the retina with cones in another part of the retina reduced retinal horizontal cell density MPheno.ontology