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Morning glory disc anomaly

Congenital deformity of the optic nerve From Wikipedia, the free encyclopedia

Morning glory disc anomaly
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The morning glory disc anomaly (MGDA) is a congenital deformity resulting from failure of the optic nerve to completely form in utero.[1] The term was coined in 1970 by Kindler, noting a resemblance of the malformed optic nerve to the morning glory flower.[2] The condition is usually unilateral.[3]

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Morning glory disc retinography
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Morning glory syndrome optical coherence tomography angiography (OCTA)
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Presentation

Complications

Serous retinal detachment can occur in the affected eye.[4]

Associated conditions

Although the finding itself is rare, MGDA can be associated with midline cranial defects and abnormal carotid circulation, such as carotid stenosis/aplasia or progressive vascular obstruction with collateralization (also known as moyamoya disease).[4] The vascular defects may lead to ischemia, stroke, or seizures and so a finding of MGDA should be further investigated with radiographic imaging.

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Diagnosis

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Morning glory syndrome optical coherence tomography (OCT)

On fundoscopic examination, there are three principal findings comprising the anomaly:[5]

  1. an enlarged, funnel-shaped excavation in optic disc
  2. an annulus or ring of chorioretinal pigmentary changes surrounding the optic disc excavation
  3. a central glial tuft overlying the optic disc

See also

References

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