Optical coherence tomography measures
| Colour fundus photography | Optical coherence tomography |
| Disc height | Inner limiting membrane |
| Disc width | Retinal nerve fibre layer |
| Cup height | Ganglion cell layer |
| Cup width | Inner plexiform layer |
| Fractal dimension | Retinal Pigment epithelium |
| Vessel density | Bruch’s membrane |
| Distance tortuosity | Inner nuclear layer |
| Squared curvature tortuosity | External limiting membrane |
| Tortuosity density | |
| Artery fractal dimension | |
| Artery vessel density | |
| Artery average width | |
| Artery distance tortuosity | |
| Artery squared curvature tortuosity | |
| Artery tortuosity density | |
| Vein fractal dimension | |
| Vein vessel density | |
| Vein average width | |
| Vein distance tortuosity | |
| Vein squared curvature tortuosity | |
| Vein tortuosity density |