I had it done a couple of months ago and I felt something similar. I had it done in the hospital where I work and as there were a couple of things I wanted to finish off, I went back to work after. I wear glasses for short-sightedness and usually wear them all the time, even for reading. After the drops I found that I could just about focus in the distance if I had my gasses on and concentrated. I could also focus up close if I had the glasses off, got right up close and concentrated. However the transition between the two was… unpleasant and rather like what you describe. My WAG was that either the dilation itself made it difficult to change focus or that the drops had a side effect on the eye muscles that made it difficult. It wore off over few hours.