<prompt> Lamina cribrosa is absent in:Morning Glory syndromeNanophthalmiaColobama of retinaOptic nerve agenesis  <response>: Ans. a Morning Glory syndromeRef: Morning Glory syndrome- A histopathological study British Journal of ophthalmology; the morning Glory syndrome Opthalmologica 1983; 187 7: 222-230 1990, 74; 56-58 