<prompt> Proptosis not seen in?Primary thyrotoxicosisSarcoidosisPituitary adenomaHypothyroidism  <response>: Ans. d i.e. Hypothyroidism Eve involvement in Groves disease Graves ophthalmophathyo The wide eyed stare and proptosis due to:- Increased sympathetic tone Infiltration of orbital soft tissue and extra ocular muscles with lymphocytes. Mycopolysaccharides and edema fluids.Causes of proptosisa Bilateral Proptosis1 Endocrine exophthalmos due to dysthyroid eye disease.2 Cavernous sinus thrombosis3 Metastatic neuroblastoma4 Orbital myositis due to causes other than thyroid dysfunction.b Unilateral Proptosis1 Haemangioma2 Dermoid cyst3 Lymphangioma4 Rhabdomyosarcomac Transient Proptosis1 Arterio-venous malformations2 Orbital varices 