I have not been dx'd with MS but had the Optic Neuritis. The opthamologist caught it right away. He said there were three studies done, one with a group that did straight oral steroids, another group that started with IV steroids and followed with oral steroids, and the third they did nothing. The group with the IV/oral steroids had the best long term outlook. They were at less risk for future ON. Anyway, my vision did not return completely, but most of the time it is 20/20 with no blurry spots. It took about
4-6 weeks for the ON to clear up. The steroids helped a ton. When I first checked into the ER that day, my left eye was three rows above on the eye chart than my right eye. After the three IV's I was only one row behind. Now I am even (this was two months ago). Get to the opthamologist would be my best advice.