3.Figure of eight
This is to exercise your eye muscles and increase their flexibility. This is quite a simple exercise but a good one.
Imagine a giant figure of eight in front of you about 10 feet in front of you. Now turn the 8 on it’s side. Now trace the figure of eight with your eyes, slowly. Do it one way for a few minutes and then do it the other way for a few minutes. It may seem very alien at first but it’s worth persevering with it.