Randomized control trial of evaluation of Clemastine effects on visual evoked potential, nerve fiber layer and ganglion cell layer complex in patients with optic neuritis.

Clinical Neurology and Neurosurgery
Mehdi MoghaddasiSeyedhossein Rabani

Abstract

Optic neuritis (ON) is the most common cause of optic neuropathy; typically presenting with a unilateral visual loss in young adults, with incidence of 1-5 in 100,000 per year. We evaluated the effect of Clemastine, a first-generation and CNS (central nervous system)-penetrant H1 receptor antagonist on visual evoked potential (VEP), retinal nerve fibre layer (RNFL) and ganglion cell layer (GCL) complex in patients with optic neuritis. This is a prospective comparative interventional case series in 25 patients with acute optic neuritis. Patients were randomly assigned to group 1 (treated with Clemastine 1 mg orally twice a day for 90 days; 16 patients) or group 2 (received placebo for 90 days; 9 patients) and both groups received standard treatment of optic neuritis. We recorded VEP and peripapillary OCT (optical coherence tomography) of patients before and after three months of treatment. In contrast to patients treated with Clemastine, RNFL thickness loss between base line phase and after three months follow up in control group were statistically significant in temporal, supra temporal, Infrotemporal and almost global sections of RNFL map. The reduction in GCL thickness between base line phase and after three months follow up ...Continue Reading

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