Eye examination !!

I've been to a lot of eye power check-up sessions. I have noticed that there is this common question frequently asked when the optometrist changes lens or changes the position of the lens. "Is it better now ? or now better ?" Frankly, I don't see the difference in the two questions. It is so often asked that you may get to not notice the fact that they are asking the same question that just sounds different because two words are swapped!! Weird ??!!