Urgent graham met with an accident, where he damaged his retina. the doctor suggested that graham lost his eyesight. the only possible solution would be retinal transplantation. what could be the reason that the retinal cells unlike those of skin cells do not regenerate? retinal cells are terminally differentiated; therefore, they cannot undergo mitotic division once they are matured. retinal cells are pleuripotent cells; therefore they cannot undergo mitotic division once they are matured. retinal cells are totipotent cells; therefore they cannot undergo mitotic division once they are matured.