coloboma of optic nerve morning glory syndrome https://rarediseases.info.nih.gov/diseases/13354/morning-glory-syndrome MEDGEN:767635 GARD:0013354 MONDO:0018169 Orphanet:35737 MedDRA:10027974 Morning glory syndrome (MGS) is an optic neuropathy characterized by a congenital funnel shaped excavation of the posterior fundus that incorporates the optic disk malformation (resembling the morning glory flower) MGS is usually unilateral and may result in a decrease in best-corrected visual acuity (BCVA). MGS either occurs isolated or associated to other ocular or non-ocular anomalies. Ectasic coloboma UMLS:C3554721 Volubilis syndrome hereditary optic neuropathy