Lamina cribrosa is absent in which of the following?
Morning Glory syndrome
Nanophthalmia
Colobama of retina
Optic nerve agenesis
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.