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This is both a prospective and retrospective study of patients with a known diagnosis of optic neuritis (ON) only, multiple sclerosis (MS) with ON, or neuromyelitis spectrum disorder (NMOSD) with ON. There will be no requirement for blinding (patientor assessor) and data collected with the Reflex app will be compared against other data that track optic nerve functional status, such as optical coherence tomography (OCT), visual fields (VF), low-contrast sensitivity, MRI orbits/brain and visual evoked potentials (VEP). Patients who have any diagnosis of ON, with or without a diagnosis of MS or NMOSD and who have had testing using other modalities such as VEPs, VF, low-contrast sensitivity studies, OCT, and MRI of brain or orbits will be included as retrospective subjects in the study. In this cohort, RAPD assessments will be completed and compared to against the data that has accrued as noted.
The purpose of this research is to gather information on whether using quantitative- or numerical measurements of pupil changes as an alternative to qualitative- or observation based- testing can be done to assess optic nerve dysfunction in ON, MS with ON, and NMOSD with ON. One way this is done is through evaluating relative afferent pupillary defect (RAPD), which is a clinical sign that is used to detect an injury or defect in the pupil's pathway and this often involves the retina of the eye, which focuses light, and the optic nerve, which sends visual information to your brain. When shining a light into each eye, the eye with RAPD shows a slowed response to light, and when the light moves to the normal eye, the pupil of RAPD eye will dilate. Observational evaluations of RAPD are very common in clinical neurology to detect these optic nerve diseases. As technology has advanced, to lessen the observation errors, numerical measurement of RAPD is now possible through a web based app called Reflex (Brightlamp Inc., Purdue University), which is a FDAapproved class I regulated medical device. In this study, we will compare the results of your app recording to other data that has been collected which also tracks optic nerve function status.
Reflex (Brightlamp Inc., Purdue University)
University of Kentucky
Enrolling by invitation
University of Kentucky
Published on BioPortfolio: 2019-10-24T12:49:49-0400
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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)
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