with glaucoma, and incorrectly refer 50 out of 800 patients without glaucoma. Abnormalities Megalopapilla: a non-progressive condition in which the optic disc is enlarged (diameter exceeding 2.1 mm) with no other morphological abnormalities. Morning glory disc anomaly: a unilateral congenital deformity resulting from failure of the optic nerve to completely form in utero. The term was coined in 1970 by Kindler, noting a resemblance of the malformed optic nerve to the morning glory flower. Optic pit: congenital excavation of the optic disc resulting from a malformation during development of the eye. Gallery See also Optic disc pallor References External links Diagram at Moorfields Eye Hospital Diagram at Ballard Optical Retinal Vein Pulsation Is in Phase with Intracranial Pressure and Not Intraocular Pressure Human eye anatomy