As the name suggests, this exercise was inspired by train travel. You may have looked out of a moving train and may have noticed that your eyes make very fast involuntary eye movements, so-called saccades. It is best to observe another person during a train ride and you will be able to see these saccades very well. From literature it is known that these saccades can help to direct the focus and the eye movements of the eyes to a certain side. Their task is to recognize flying birds flying from an unknown direction (left or right) to the opposite side. At the beginning the bird is not yet visible and since you do not know from which direction the bird appears, you must constantly look left and right with your eyes. This will train your eye movements. Furthermore, just like on the train, the background moves in a certain direction, which depends on the side to be trained. If you want to train the left side, the background moves from right to left and vice versa.
Press the spacebar on your keyboard, once you have seen a bird in the foreground