Coats' disease is a form of idiopathic retinal telangiectasia most often occurring unilaterally in male children and young adults.Patients present with decreased visual acuity, leukocoria or strabismus. Peripheral retinal telangiectasias consisting of dilated capillaries and small aneurysms lead to the accumulation of fluid and exudate both intraretinally and subretinally in the posterior pole. This process may eventually lead to exudative retinal detachment and profound vision loss