Agree 100% if one has visual problems. Fortunately, I haven't with the three mini GCA flares I've had. I can't see the point of returning to 40mg when I managed to eliminate my symptoms by going back to 10mg. I still have a tender head though but I had that on a high dose too.

Currently taking 4.5mg for the whole of October then I will attempt 4mg again on the 1 Nov in the hope this time I will be okay. I remain on each dose for a month. I'm in the UK and pretty much left to my own devices.