I was off prednisone then had flare so back on 15 mg to get through trip next week. My vision has been so adversely affected by this drug that it is not safe to drive as I have double vision when driving. I can deal with discomfort at home but won't enjoy trip with it. Is it safe to go on and off prednisone? I look forward to reading this blog, so comforting to have such great backup!