I have a good way to exercise my eyes after working in front of a computer for a long time. I often use my eyes to write letters from A-Z on the blank wall. I just imagine that every time I move my eyeballs, the focused vision can be the top of the pen, and can write on the wall. I often practice this when I am free. You need to fix your head when you do this. I also like to walk in the outside after supper. The green trees and grass nearby and at the distance are good for our eyes too. Meanwhile, keeping a healthy and balanced diet is also good for our eyesight for it can provide us with enough nutrients.
