<prompt> Dalen fuchs nodules ?Sympathetic OphthalmitisChronic iridocyclitisNeurofibromatosisTrachoma  <response>: Ans. is a i.e., Sympathetic Ophthalmitis Dalen fuchs nodules are seen in sympathetic ophthalmitis. Dalen-Fuchs nodules are formed due to proliferation of the pigment epithelium of the iris, ciliary body and choroid associated with invasion by the lymphocytes and epitheloid cells. Retina shows perivascular cellular infiltration sympathetic perivasculitis. 