الملخص
A thirteen years old female caucasition admitted in 5 Azar General hospital with a 3-day history of deteriorating vision. Two weeks prior to admission she had received a measles-rubella vaccination at school [as a mass campain of MR vaccination in IRAN]. General and neurological examination except lung wheezing and occular findings were normal. In visual exam she had questionable light perception in right eye and hand motion sensation in left eye. Funduscopy revealed moderate bilateral opitc disc hypermia. Investigations revealed normal full cell blood count, biochemistry profile, clotting studies and sputum. Brain CT scan and MRI were normal except pansinusitis. CSF examination revealed normal constituents. The patient treated with methyl prednisolon [1 gr/daily] for 7 days and patient had dramatic response to therapy. After 6 weeks of starting medical treatment ophthalmologic exam revealed 2 meters finger count vision in Rt eye and 6/10 visual aquity in Lt side. This patient is a rare case of bilateral optic neuritis after MR vaccination