Abnormal retinal morphology Abnormal retinal nerve fiber layer morphology 2019-07-02T16:34:14Z A structural abnormality of the retinal nerve fiber layer The retinal nerve fiber layer consists of unmyelinated ganglion cell axons coursing on the vitreal surface of the retina to the optic disc. These axons become myelinated after entering the optic nerve. Abnormal retinal nerve fibre layer morphology