If you go into settings - general - accessibility and turn on "reduce motion", then go back to your home screen and zoom in as far as you can to the icons. Now, the animation that makes the center-most icon the largest and make all the other icons smaller and smaller will go away. All your icons will appear bigger and even in size, making it much easier to tap on.
Before:
http://i.imgur.com/YRVg8IM.jpg
After:
http://i.imgur.com/4HxnMKS.jpg
Before:
http://i.imgur.com/YRVg8IM.jpg
After:
http://i.imgur.com/4HxnMKS.jpg