Coats disease,known as the outer exudative retinopathy,is a kind of disease characterized by retinal capillaries expansion and microvascular abnormalities,often accompanied by retinal or subretinal exudation and lipids exudative retinal detachment.Neovascular glaucoma and ocular atrophy often occur in the late time.Coats disease is significant diversity in clinical presentation and morphology.For nearly a century,with the development of understanding of the disease,vireoretinal specialists have a new view on diagnosis and treatment of it.This article reviews the recent progress in the diagnosis and treatment of Coats disease.