Hi...by what you quote I feel that your daughter is having optic neuritis...considering the age and gender of the kid the most important diagnoses to be ruled out is autoimmune phenomenon which the doctors you are consulting have very well done already. Sometimes it can be idiopathic too...this means for which no cause can be ascertained. But the steroids will definitely help prevent complications. If her vision has not improved significantly, I suggest going ahead with a pulse dose of methylprednisolone and then followed by oral steroids. Sometimes it can take some weeks to recover the eye sight. So we need to wait and watch. I feel that the evaluation and management of the case is going in the right direction. Regards - Dr. Sumanth