Fundoscopy and patients history. Differential Diagnoses Several other diseases can result in<unk>  that can be confused with<unk> . These include diabetic<unk> ,<unk>  due to autoimmune disease, anemia, radiation<unk> , and central retinal vein occlusion. Keith Wagener Barker (KWB) Grades ;Grade 1 :Vascular Attenuation ;Grade 2 :As grade 1 + Irregularly located, tight constrictions – Known as "AV nicking" or "AV nipping" – Salus's sign ;Grade 3 :As grade 2 + Retinal edema, cotton wool spots and flame-hemorrhages "Copper Wiring" + Bonnet's Sign + Gunn's Sign ;Grade 4 :As grade 3 + optic disc edema + macular star "Silver Wiring" There is an association between the grade of<unk>  and mortality. In a classic study in 1939 Keith and colleagues described the prognosis of people with differing severity of<unk> . They showed 70% of those with grade 1<unk>  were alive after 3 years whereas only 6% of those with grade 4 survived. The most widely used modern classification system bears their name. The role of<unk>  grading in risk stratification is debated, but it has been proposed that individuals with signs of<unk>  signs, especially retinal hemorrhages, microaneurysms and cotton-wool spots, should be assessed carefully.
Hypertensive retinopathy
Diabetic retinopathy
Autoimmune retinopathy
Radiation retinopathy
Photic retinopathy
Retinal vasculitis
Diabetic papillopathy
Branch retinal artery occlusion