I Have Glaucoma And Am Having With One Of My

I have glaucoma and am having with one of my medicines. when I went to the doctor last week I told him I could not take the brimonidine 0.15% and of course he was upset because my eyes are worse. I received paperwork in the mail 2 days later and it was just about what we talked about and my condition. He had called me in a different medicine for the one I was having problems with. It is still brimonidine but the strength is 0.2% eye drops. Is this stronger or weaker?