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OCT= Optical Coherence Tomography Provides advanced high definition imaging of the Optic nerve Takes 27,000 A- scans/sec Time Domain vs. Spectral Domain.

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Presentation on theme: "OCT= Optical Coherence Tomography Provides advanced high definition imaging of the Optic nerve Takes 27,000 A- scans/sec Time Domain vs. Spectral Domain."— Presentation transcript:

1 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 Machine3D-view of the Optic Nerve From: Carl Zeiss

2 3D-view of the Optic Nerve, showing surface and cross-section From: Carl Zeiss

3 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

4 Correlation of Optic nerve damage: Visual field defects (visual Function) and OCT (Structural changes) 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) Right Eye (OD) Left Eye (OS) Right Eye (OD)Left Eye (OS) Right Eye (OD) Left Eye (OS) Copyright: Swaraj Bose, MD Inc


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