<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi Doctor, I have been experiencing some vision problems lately. My vision is blurry, and I have trouble seeing colors. I also feel pain behind my eyes.  <response>: Based on your symptoms, it seems you are suffering from optic neuritis. I will prescribe you Glatiramer Copaxone to help reduce inflammation and protect your nerves. 