Idiopathic orbital myositis is a subtype of idiopathic orbital inflammatory diseases characterized by inflammation of the extraocular muscles. The diagnosis of the disease is made clinically and radiologically. Clinically characterized by periorbital edema, ptosis, propitosis, diplopia and painful eye movements. The diagnosis is made by observing the enlargement of the involved muscles in the orbital CT. The most common differential diagnosis is thyroid ophthalmopathy. In this study, we presented two patients with idiopathic orbital myositis who were referred to our clinic with complaints of eye rash, eye movement pain, bilateral visual acuity. Idiopathic orbital myositis was diagnosed and 1 mg/kg/day oral prednisolone was started. Symptoms of the patients regressed with oral corticosteroid therapy.