<prompt> Lamina cribrosa is absent in which of the following?Morning Glory syndromeNanophthalmiaColobama of retinaOptic nerve agenesis  <response>: The term morning glory syndrome MGS was introduced because the papillary region in the affected eye is reminiscent of a withering flower of morning glory. Morning Glory Syndrome associated with a peripapillary scleral defect, absence of a lamina cribrosa and a recess formed by an axial retrodisplacement of the optic nerve. The central posterior scleral malformation may be associated with other intraocular anomalies, of which non-rhegmatogenous retinal detachment is the most frequent. Ref: The Morning Glory syndrome ophthalmologica 1983; 187 7 : 222 - 230 1990, 74; 56- 58; Aicle: Morning glory syndrome: a histopathological study, NCB. 