Besides the above well-known two eye exercise, there are other eye exercises taking effect, too, such as playing tennis and cricket. Imagination is also beneficial to eyesight by the way of make full use of memory and imagination to make any mental picture.
We can see the world clearly by both of our two eyes, and one eye can not work well. So a right use of two eyes is very important. A lot of people use only one eye to see the world, resulting in the decay of the unused eye. We learn to see after birth. If eyes do not see very often, they may form the habit of laziness and inactivity. Therefore, we should use both eyes in a proper way to get better eyesight. Practice the exercise after a long period, you may find you can see the world better than before without help of eyeglasses.