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 ORIGINAL ARTICLE
Year : 2012  |  Volume : 60  |  Issue : 5  |  Page : 470--475

Optic neuritis: Experience from a south Indian demyelinating disease registry


1 Department of Neurology, KS Hegde Medical Academy, Nitte University, Mangalore, Karnataka, India
2 Department of Neurology, AJ Hospital Hospital and Research Centre, Mangalore, Karnataka, India
3 Department of Neurology, Kasturba Medical College, Mangalore, Karnataka, India
4 Center for Diseases of Retina and Center for Diseases of Retina and Vitreous, SIMS Center, Mangalore, Karnataka, India

Correspondence Address:
Lekha Pandit
Department of Neurology, KS Hegde Medical Academy, Nitte University, Mangalore, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0028-3886.103186

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Background: Natural history of optic neuritis (OPN) has not been studied in India. Aim: To study consecutive patients with optic neuritis as the initial manifestation of the neurologic disease and with disease duration of 3 or more years registered in the Mangalore Demyelinating Disease Registry. Materials and Methods: The study included 59 patients with a primary diagnosis of optic neuritis (confirmed by either an ophthalmologist or a neurologist or both). All the patients were investigated and followed-up in the clinic. Results: During the follow-up of the 59 patients, 29 (49%) patients developed multiple sclerosis (MS); 3 (5%) patients neuromyelitis optica (NMO); and 13 (22%) patients chronic relapsing inflammatory optic neuritis (CRION), while the remaining 14 (24%) did not either progress or relapse, monophasic OPN. An initial abnormal magnetic resonance imaging predicted conversion to MS in all 7 patients who had imaging at onset. Patients with NMO were left with significant residual visual loss distinguishing NMO from MS. In this large series of patients with CRION, nearly 50% of patients had deterioration in vision while steroids were being tapered. Long-term immunosuppression was essential for maintaining good visual outcome in both NMO and CRION. Conclusions: Optic neuritis in India appears similar to that in the West with nearly 50% developing MS in the long term.






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