Colour photograph | Nerve fibre layer infarcts | Cotton wool spots |
Retinal haemorrhage | Flecks of haemorrhage assuming a feathery or circular disposition indicating nerve fibre layer location or in the inner retina. |
Fluorescein angiogram | Microaneurysms | Focal circular outpouchings from retinal microvessels |
Luminal irregularities | Segmental narrowing of retinal vessels |
Retinal vascular telangiectasia | Fusiform dilations of retinal microvessels |
Capillary non-perfusion | Areas of decreased fluorescence in a perivascular distribution |
Vascular sheathing | Glistening or white perivascular appearance indicating presence of gliosis/fibrosis |
Leakage from retinal vessels | Diffuse staining and hyperfluorescence along the length of retinal vessels |
Optical coherence tomography | Intraretinal oedema | Hyporeflective areas within the neurosensory retina in an area not occupied by the neovascular lesion |