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 Machine
3D-view of the Optic Nerve
From: Carl Zeiss

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

3. 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

4. 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