A 3 year old male presents with a sudden onset visual loss in left eye. Ophthalmological examination reveals strabismus and white pupillary reflex. Fundus finding is shown below.What is your diagnosis?

The clinical history along with fundus finding of telangiectatic vessels and hard exudates points towards a diagnosis of Coats disease. Coats disease Idiopathic non-hereditary,retinal telangiectasia. Age group-1st decade of life (average 5 years) Clinical features-Unilateral visual loss,strabismus,leukokoria. It is characterised by retinal angiomas and massive subretinal exudation from the angiomas.This exudation produces retinal detachment.Cataract and angle closure glaucoma may also occur in late stages.