has part has part has_part characteristic of part of has modifier retina development in camera-type eye abnormal eye development abnormal retina morphology abnormal retina development MP:0009772 abnormal retinal development anomaly in any of the steps during embryogenesis that produce the nerve layer lining in the back of the eye which senses light, and creates impulses that travel through the optic nerve to the brain MPheno.ontology quality abnormal