The muscles that control the adjustment of the lenses in the eyes become "lazy" as you reach your forties. The lenses themselves become harder and consequently, less flexible. That is why the eyes appear out of focus when we look at something nearer or farther than what we are looking at.
I endured the same tests a while ago, with some doctor at some cheap EK referred hospital. She (the doctor) screwed up and didn't check the eye fundii (retina, blood vessels, optical nerve), so I needed to have my pupils dilated again on the same day. My eyes became "funny" for some time, but went back to normal after a few hours.
The news now is that we don't need those tests anymore.