Some users on Apple?s Support Communities discussion forum are expressing discontent with the parallax and zooming animations in iOS 7



From MacRumors:

Instead, most are pointing to the zooming effects that are now ubiquitous across iOS when opening and closing apps or entering the multitasking menu. "I had severe vertigo the minute I started using my iPad with iOS 7," writes Apple forum user glassrabit. "Lost the rest of the day to it." Another user, nybe, writes, "I had to go home 'sick' from work because of the intense nausea due to using my iPhone with iOS 7."

  iOS 7 Users Complaining About Motion Sickness Due to Parallax and Zooming Effects