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Título: Visual Function following Treatment of Optic Neuritis
Autores: Majid Abrishami; Mashhad University of Medical Sciences
Mir-Naghi Moosavi; Mashhad University of Medical Sciences
Abbas Azimi-Khorasani; Mashhad University of Medical Sciences
Azardokht Vazifeshenas; Mashhad University of Medical Sciences
Fecha: 2008-12-22
Publicador: Ophthalmic Research Center
Fuente: Ver documento
Tipo:
Tema: No aplica
Descripción: PURPOSE: To evaluate changes in different aspects of visual function including visual acuity, visual field, contrast sensitivity, colour vision and stereopsis in patients with optic neuritis before and after medical intervention. METHODS: In a noncomparative interventional case series on 31 eyes of 30 patients with optic neuritis, the following aspects of visual function were compared before and after treatment. Medical intervention was conducted following the Optic Neuritis Treatment Trial (ONTT) guidelines. Visual function was assessed by evaluating changes in visual acuity, visual field (Goldmann in all patients and automated in some patients), contrast sensitivity using Cambridge low contrast grating, colour vision using Ishihara plates and stereopsis using Titmus stereoacuity test. RESULTS: Visual acuity was significantly lower (3/10) in the affected eyes than unaffected eyes (8/10) [P < 0.001]. Contrast sensitivity was also significantly better in the unaffected eyes. Mean stereoacuity was 310 sec/arc. The visual field impairment was also significantly higher than that of the unaffected eye and also normal population sample. Weak deutan defects were present in 60% of the patients. After medical treatment, visual acuity, visual field defects, contrast sensitivity, colour and stereopsis were significantly improved. CONCLUSION: Different aspects of visual function including visual acuity, visual field, contrast sensitivity, colour vision, and stereopsis are impaired in optic neuritis. Medical treatment with intravenous methylprednisolone followed by oral steroids is effective in improving these parameters. However, some deficits may persist after therapy. Since spontaneous recovery after optic neuritis is common, clinical trials are needed to determine the true effect of treatment versus follow-up. 
Idioma: Inglés
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