CONGENITAL ARTERIO-VENOUS MALFORMATION OF OPTIC NERVE HEAD- A RARE CASE

Introduction: Retinal arterio-venous malformations (AVMs) are rare, congenital, high-flow congenital developmental vascular anomalies without intervening capillary bed also known as racemose angioma, They unilateral, nonhereditary lesions located anywhere in retina and may involve optic nerve.
 Case report: A 55 year old male was found to have abnormal malformation over nerve head his left eye, an incidental clinical finding. He had reported for routine fundus examination due diabetes. no other relevant systemic findings. Further follow up advised see the progression of lesion structural damage Discussion: The typical picture, fluorescein angiogram findings, normal MRI brain orbits, base line blood investigations all points favour a malformation. 
 Conclusion: Arterio- venous Optic very rare find compared retinal malformations. This is first such case report from India.