Evaluation of retinal nerve fibre layer thickness and visual evoked potentials in optic neuritis associated with multiple sclerosis. 2012

Irini P Chatziralli, and Marilita M Moschos, and Dimitrios Brouzas, and Konstantinos Kopsidas, and Ioannis D Ladas
1st Department of Ophthalmology, University of Athens, Medical School, Athens, Greece.

BACKGROUND The aim was to compare the retinal nerve fibre layer (RNFL) thickness and visual evoked potentials (VEP) among eyes with multiple sclerosis (MS)-associated optic neuritis, unaffected eyes of the same patients and eyes of disease-free controls. Changes in RNFL thickness, visual acuity (VA) and VEP over time are evaluated in MS-associated optic neuritis. METHODS Forty-six eyes of 23 patients (six male and 17 female), who suffer from MS and were diagnosed with unilateral or bilateral optic neuritis, participated in the study. Forty eyes of 20 age- and gender-matched controls were tested. VA measurement, optical coherence tomography and VEP were performed in all patients at presentation and at one, three and six months thereafter. RESULTS There was a statistically significant difference in VA between MS eyes with optic neuritis and controls (p < 0.0001), as well as between MS eyes with and without optic neuritis (p < 0.005). VA improved over time. Average RNFL thickness was reduced in MS eyes with or without optic neuritis in comparison to control eyes. This reduction in RNFL thickness was more marked over time. The amplitude of P(100) was significantly decreased in MS eyes with optic neuritis in comparison to controls (p < 0.0001) and there was a statistically significant delay in peak time of P(100) in MS eyes with optic neuritis versus the eyes of normal subjects (p < 0.0001), which improved over time. CONCLUSIONS The present study suggests that there is a progressive decrease in RNFL over time in eyes with optic neuritis associated with MS. The amplitude and latency of P(100) in VEP examination returned to normal ranges over time.

UI MeSH Term Description Entries
D008297 Male Males
D009103 Multiple Sclerosis An autoimmune disorder mainly affecting young adults and characterized by destruction of myelin in the central nervous system. Pathologic findings include multiple sharply demarcated areas of demyelination throughout the white matter of the central nervous system. Clinical manifestations include visual loss, extra-ocular movement disorders, paresthesias, loss of sensation, weakness, dysarthria, spasticity, ataxia, and bladder dysfunction. The usual pattern is one of recurrent attacks followed by partial recovery (see MULTIPLE SCLEROSIS, RELAPSING-REMITTING), but acute fulminating and chronic progressive forms (see MULTIPLE SCLEROSIS, CHRONIC PROGRESSIVE) also occur. (Adams et al., Principles of Neurology, 6th ed, p903) MS (Multiple Sclerosis),Multiple Sclerosis, Acute Fulminating,Sclerosis, Disseminated,Disseminated Sclerosis,Sclerosis, Multiple
D009902 Optic Neuritis Inflammation of the optic nerve. Commonly associated conditions include autoimmune disorders such as MULTIPLE SCLEROSIS, infections, and granulomatous diseases. Clinical features include retro-orbital pain that is aggravated by eye movement, loss of color vision, and contrast sensitivity that may progress to severe visual loss, an afferent pupillary defect (Marcus-Gunn pupil), and in some instances optic disc hyperemia and swelling. Inflammation may occur in the portion of the nerve within the globe (neuropapillitis or anterior optic neuritis) or the portion behind the globe (retrobulbar neuritis or posterior optic neuritis). Neuropapillitis,Retrobulbar Neuritis,Anterior Optic Neuritis,Posterior Optic Neuritis,Anterior Optic Neuritides,Neuritides, Anterior Optic,Neuritides, Optic,Neuritides, Posterior Optic,Neuritides, Retrobulbar,Neuritis, Anterior Optic,Neuritis, Optic,Neuritis, Posterior Optic,Neuritis, Retrobulbar,Neuropapillitides,Optic Neuritides,Optic Neuritides, Anterior,Optic Neuritides, Posterior,Optic Neuritis, Anterior,Optic Neuritis, Posterior,Posterior Optic Neuritides,Retrobulbar Neuritides
D012160 Retina The ten-layered nervous tissue membrane of the eye. It is continuous with the OPTIC NERVE and receives images of external objects and transmits visual impulses to the brain. Its outer surface is in contact with the CHOROID and the inner surface with the VITREOUS BODY. The outer-most layer is pigmented, whereas the inner nine layers are transparent. Ora Serrata
D005074 Evoked Potentials, Visual The electric response evoked in the cerebral cortex by visual stimulation or stimulation of the visual pathways. Visual Evoked Response,Evoked Potential, Visual,Evoked Response, Visual,Evoked Responses, Visual,Potential, Visual Evoked,Potentials, Visual Evoked,Response, Visual Evoked,Responses, Visual Evoked,Visual Evoked Potential,Visual Evoked Potentials,Visual Evoked Responses
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D001369 Axons Nerve fibers that are capable of rapidly conducting impulses away from the neuron cell body. Axon
D014792 Visual Acuity Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast. Acuities, Visual,Acuity, Visual,Visual Acuities

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