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  4. OCT: new perspectives in neuro-ophthalmology

OCT: new perspectives in neuro-ophthalmology

Authors

Rebolleda Gema
Diez Alvarez, Laura
Casado, Alfonso
Sanchez Sanchez, Carmen
De Dompablo, Elisabet
Gonzalez Lopez, Julio J.
Munoz Negrete, Francisco J.
University of Alcala ; , Hospital University Ramony Cajal. IRYCIS ; , Department of Ophthalmology ;

Saudi J. Ophthalmol. 2015; 29 (1): 9-25
SJO-Saudi Journal of Ophthalmology
Journal Country: Saudi Arabia
P-ISSN: 1319-4534
Type of Publication: Journal Article
Category: Humans,
Type of Research: Clinical
Keywords: Tomography, Optical Coherence
Broad Subjects: Health Systems, Ophthalmology ,Nervous System ,Retinal Ganglion Cells
Citation: Gema Rebolleda ,Laura Diez Alvarez ,Alfonso Casado ,Carmen Sanchez Sanchez ,Elisabet De Dompablo ,Julio J. Gonzalez Lopez ,Francisco J. Munoz Negrete , OCT: new perspectives in neuro-ophthalmology, Saudi J. Ophthalmol. 2015; 29 (1): 9-25

Abstract English

Optical coherence tomography [OCT] has become essential to evaluate axonal/neuronal integrity, to assess disease progression in the afferent visual pathway and to predict visual recovery after surgery in compressive optic neuropathies. Besides that OCT testing is considered a powerful biomarker of neurodegeneration and a promising outcome measure for neuroprotective trials in multiple sclerosis [MS] . Currently, spectral-domain OCT [SD-OCT] technology allows quantification of retinal individual layers. The Ganglion Cell layer [GCL] investigation has become one of the most useful tools from a neuro-ophthalmic perspective. It has a high correlation with perimetry, is predictive of future progression and is a highly sensitive, specific of several neuro-ophthalmic pathologies. Moreover the superior correlation with clinical measures compared to peripapillary retinal nerve fiber layer [pRNFL] suggests that GCL analysis might be a better approach to examine MS neurodegeneration. In disorders with optic disk edema, such as ischemic optic neuropathy, papillitis and papilledema, reduction in RNFL thickness caused by axonal atrophy is difficult to distinguish from a swelling resolution. In this setting, and in buried optic nerve head drusen [ONHD] , GCL analysis may provide more accurate information than RNFL analysis and it might be an early structural indicator of irreversible neuronal loss. Enhanced depth imaging OCT [EDI-OCT] provides in vivo detail of ONHD, allowing to evaluate and quantify the drusen dimensions. OCT is improving our knowledge in hereditary optic neuropathies. Furthermore, there is growing evidence about the role of OCT as an adjunctive biomarker of disorders such as Alzheimer and Parkinson’s disease

Full Text English

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