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Optical coherence tomography (OCT) is a noninvasive retinal scan that is used increasingly in neurologic practice. Prior studies have shown that risk of future disability is higher for those with decreased retinal nerve fiber layer (RNFL) thickness (NEJM JW Neurol May 2016 and Lancet Neurol 2016; 15:574). In 132 patients with multiple sclerosis (MS), investigators have now evaluated baseline ganglion cell plus inner plexiform layer (GCIPL) thickness and Expanded Disability Status Scale (EDSS) at baseline and at a median follow-up of 10 years.
An average GCIPL of <70 microns was associated with an adjusted odds ratio of 3.97 for worsening disability compared with ≥70 microns and with an adjusted OR of 2.93 for worsening vision on 2.5% contras…