Perhaps an eye exam is in order?
Be sure to tell Apple how you feel: http://www.apple.com/feedback/iphone.html
Some changes to the UI were made with 7.1, who knows what changes are in store for iOS 8?
stevejobsfan0123 had it correct. they added in the reduce motion feature for that very issue. some people were finding the extra motion of ios 7 to much and they were getting motion sickness. apple updated a feature called reduce motion in the accessibility for that very reason.
I don't understand why we can't have the option of having the classic look or the new look. We should be able to decide for ourselves.
Apple's never been very big on the idea of letting the end user decide what's best for themselves.
Submit your feedback directly to Apple using the appropriate link on the Feedback page:
Hello, i have had a couple of problems with my iphone 4 after only one month of having it. I uploaded IOS 7.1 and since then the screen has been flickering. And now if i go and take a photo either the screen turns black or goes really light. It seems to get worse everyday.
What can i do to solve these problems?
Backup your phone and restore iOS.
Try restoring from the backup first. If the problem still exists then try restoring again as a new device (not from a backup) as the problem may be present in your backup.