abnormal retinal photoreceptor morphology abnormal photoreceptor inner segment morphology MPheno.ontology MP:0003730 any structural anomaly of the photoreceptor region which contains the machinery of the cell (mitochondria, golgi, endoplasmic reticulum, etc) and where opsin molecules are assembled and passed to be part of the outer segment region GO:0001917 abnormal photoreceptor inner segments