Pupil is dilated. Is it normal?

Hi. I was diagnosed with posterior uveitis. Optic nerve was discovered swollen in January. I have taken medications and tappered oral prednisone from 60/20/10mg. After I have stopped taking 10mg prednisone after 2 weeks, I visited my doc for another checkup. He was about to dilate my left and right eye but then he told me my right (problem eye with uveitis) is already dilated. But he told me it could be the effects of medications. He found water in my eyes, but swollen optic nerve luckily have flatten and improved. He told me condition now is controllable.

I just wanted to ask about dilated from here as this sub has been very helpful to me the past months I was struggling with uveitis.