Does Having Lasik Make Your Pupils Dilate More Than They Did Pre-op?

For some reason ever since I had lasik my eyes seem to get bigger than they were before lasik. I've read in articles that having unequal eye prescriptions will cause this. Not sure if its true. I only really notice this in low light or if I'm staring at something far away. Any ideas? Or maybe I've just never really paid to much attention to them.