Features

Morning glory syndrome

Disease
The appearance of this very rare congenital malformation of the optic nerve head has been likened to the morning glory flower. The optic disc is displaced posteriorly in a funnel-shaped excavation surrounded by an elevated pigment ring.

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The cause of morning glory syndrome is unknown. It may be a form of optic disc coloboma. The retinal detachment is thought to result from a retinal tear within the excavation, providing an abnormal communication between the subretinal space and either the vitreous cavity or the subarachnoid space surrounding the optic nerve.

Symptoms

Poor vision in the affected eye.

Signs

Most cases are unilateral. Visual acuity in the affected eye usually ranges between 20/100 (6/30) and hand movements. There may be an associated strabismus and/or myopia.

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