FP68

A case of Bilateral Atypical optic neuritis secondary to MOG antibody

Introduction
MOG associated disease is a newly emerging demyelinating CNS disease, characterized by severe bilateral optic neuritis.Here we present a successfully treated case of MOG associated optic neuritis.
Case report 
16 year old boy presented with sudden  diminution of vision in both eyes,associated with pain on ocular movements.Visual acuity was counts finger 1 meter bilaterally and Fundus examination was suggestive of bilateral papillitis.MRI showed gadolinium enhancement of bilateral optic nerve and VEP was suggestive of bilateral optic neuritis.ESR(58mm/h) & CRP levels(11mg/l) were elevated and Anti MOG antibody was strongly positive.The patient was started on steroids and azathioprine.
On follow up patient achieved vision of 6/6 bilaterally by 1 month.
Conclusion
MOG associated disease is an autoimmune disorder causing bilateral optic neuritis which requires a quick diagnosis and aggressive treatment with immunosuppressive drugs for the patient to regain a good vision.