I am undergoing test for ms , as I have all the symptoms. I went to the opticians and she is rather concerned that I have one pupil larger than the other . She has been testing my eyes for years and has never seen this in my eyes before . She wants me to tell the consultant when I see her in a few weeks and is going to write to her . What is this

It could be one of a variety of things. Also could be temporary or permanent. Why is One Pupil Larger than The Other? | Why (http://www.knowswhy.com/why-is-one-pupil-larger-than-the-other/)

This is really something that only your doctor is going to be able to give you a FOR SURE answer about. You can always do your own research on it though to see if there are similar stories to yours.

Keep in mind that an Optician is NOT a doctor and cannot diagnose.