Diagnosis of<unk>  is mainly clinical with exclusion. Diagnosis of this<unk>  can be complete through several different diagnostic tests. These tests include fundus fluorescein angiography (FFA) and ocular coherence tomography (OCT). FFA is used to identify Retinal periphlebitis (inflammation of the peripheral blood vessels in the eye) or peripheral non-perfusion. OCT is a noninvasive way to view the retina and identify macular edema, neovascularization, and hemorrhage. The diagnosis of<unk>  can be broken down into several stages due to the regular progression of the<unk> . Stage Description I Periphlebitis of small (Ia) and large (Ib) caliber vessels with superficial retinal hemorrhages IIa Capillary non-perfusion IIb Revascularization elsewhere/of the disc IIIa Fibrovascular proliferation IIIb Vitreous hemorrhage IVa Traction/combined rhegmatogenous retinal detachment IVb Rubeosis iridis, neovascular glaucoma, complicated cataract, and optic atrophy Differential diagnosis There are many other ailments that show similar symptoms to ED. Differential diagnosis are as follows; retinopathy of prematurity (ROP) sequelae, familial exudative vitreoretinopathy, sarcoidosis, Behçet<unk> , sickle cell anemia, Terson syndrome, post traumatic vitreous hemorrhage, juvenile diabetes and primary branch retinal vein occlusion.
Eales disease
Bright's disease
Haff disease
Caroli disease
Meleda disease
Borna disease
Machado–Joseph disease
Elephantiasis