OCT= Optical Coherence Tomography

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Presentation transcript:

OCT= Optical Coherence Tomography Provides advanced high definition imaging of the Optic nerve Takes 27,000 A- scans/sec Time Domain vs. Spectral Domain (SD-OCT) High speed, automatic centering, eye movement correction Useful to understand pathologic mechanisms in the eye and brain The OCT Machine 3D-view of the Optic Nerve From: Carl Zeiss

3D-view of the Optic Nerve, showing surface and cross-section From: Carl Zeiss

Loss of RNFL superiorly both eyes OCT (Optical Coherence Tomography) : Retinal Nerve Fiber Layer (RNFL) Thickness of the Optic Nerve compared to age-matched controls Normal RNFL plot (Green color represent correlation with normals) Loss of RNFL superiorly both eyes Red represents loss of nerve fibers Yellow shows borderline loss Copyright: Swaraj Bose, MD Inc

Right Eye (OD) Correlation of Optic nerve damage: Visual field defects (visual Function) and OCT (Structural changes) Right Eye (OD) Left Eye (OS) Left Eye (OS) Left Eye (OS) Right Eye (OD) Visual field defects seen in the lower or bottom halves of both eyes OCT changes show optic nerve fiber layer thinning in the upper halves of both eyes (Note: damage is opposite to field defect) Copyright: Swaraj Bose, MD Inc