This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
Lamina cribrosa is not present in 
Select and explain. 
A. Morning glory syndrome, B. Nanophthalmia, C. Coloboma of retina, D. Optic nerve agenesis
A: Morning glory syndrome
Answer: A: Morning glory syndrome 
Explanation: Morning glory syndrome is a mesodermal defect in which there is peripapillary defect along with absence of lamina cribrosa.