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Year : 2021  |  Volume : 11  |  Issue : 1  |  Page : 3-15

Recent advances and future directions on the use of optical coherence tomography in neuro-ophthalmology

1 Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
2 The New England Eye Center, Tufts Medical Center, Boston, MA, USA
3 Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, ON, Canada

Correspondence Address:
Dr. Jonathan A Micieli
Kensington Vision and Research Centre, 340 College Street, Suite 501, Toronto, ON M5T 3A9
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/tjo.tjo_76_20

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Optical coherence tomography (OCT) is a noninvasive imaging technique used to qualitatively and quantitatively analyze various layers of the retina. OCT of the retinal nerve fiber layer (RNFL) and ganglion cell–inner plexiform layer (GCIPL) is particularly useful in neuro-ophthalmology for the evaluation of patients with optic neuropathies and retrochiasmal visual pathway disorders. OCT allows for an objective quantification of edema and atrophy of the RNFL and GCIPL, which may be evident before obvious clinical signs and visual dysfunction develop. Enhanced depth imaging OCT allows for visualization of deep structures of the optic nerve and has emerged as the gold standard for the detection of optic disc drusen. In the evaluation of compressive optic neuropathies, OCT RNFL and GCIPL thicknesses have been established as the most important visual prognostic factor. There is increasing evidence that inclusion of OCT as part of the diagnostic criteria for multiple sclerosis (MS) increases its sensitivity. Moreover, OCT of the RNFL and GCIPL may be helpful in the early detection and monitoring the treatment of conditions such as MS and Alzheimer's disease. OCT is an important aspect of the neuro-ophthalmologic assessment and its use is likely to increase moving forward.

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