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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. The term was coined in 1970 by Kindler, noting a resemblance of the malformed optic nerve to the morning glory flower. The condition is usually unilateral. On fundoscopic examination, there are three principal findings comprising the anomaly: #an enlarged, funnel-shaped excavation in optic disc #an annulus or ring of chorioretinal pigmentary changes surrounding the optic disc excavation #a central glial tuft overlying the optic disc ==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 Moya moya). The vascular defects may lead to ischemia, stroke, or seizures and so a finding of MGDA should be further investigated radiographic imaging. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Morning glory disc anomaly」の詳細全文を読む スポンサード リンク
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