Sameer Surendra Soneji DMRD, Presenter: Nothing to Disclose

Ritu Manoj Kakkar MBBS, Abstract Co-Author: Nothing to Disclose

Ankit Radhakrishna Bajpai MBBS, Abstract Co-Author: Nothing to Disclose

Shrinivas Balaji Desai MD, Abstract Co-Author: Nothing to Disclose

To outline a clinico-radiological approach to acute visual loss.

Causes of acute visual loss are optic or neurological. Optic causes are refractive errors and media opacities & do not require cross-sectional imaging. Neurological visual loss assessed by unilateral relative afferent pupillary defect (RAPD) and pattern of visual loss (POVL). RAPD differentiated between prechiasmal and retrochiasmal lesions. Characteristic POVL’s are Central scotoma in optic neuritis (ON) Altitudinal defect in anterior ischemic optic neuritis (AION) Bitemporal deficit in chiasmal lesions Peripheral constriction with enlarged blind spot in papilledema or pseudotumor cerebri Homonymous Incongruous Hemianopia/ Homonymous Quadrantanopisia/Homonymous Congruous Hemianopsia in optic tract and optic radiation lesions. Commonest causes of Optic Neuritis are Demyelination, ADEM, Infectious, inflammatory, compressive and traumatic. Giant cell arteritis is important caused of AION. In Papilledema differential diagnosis to consider are hydrocephalous, masses and venous thrombosis. Sellar and parasellar lesions can compress the chiasma. Optic tract and radiations affection can be seen by vascular causes, tumors, trauma and migraines. Radiological evaluation of acute visual loss with neuro-ophthlamological findings can guide timely emergency management.  

http://abstract.rsna.org/uploads/2014/14017615/14017615_os7h.pdf

Soneji, S, Kakkar, R, Bajpai, A, Desai, S, Approach to Acute Visual Loss.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14017615.html