There is some controversy around the subject of whether eye exercises work to improve vision. But many people claim to be helped by exercises such as these, especially for alleviating the symptoms of presbyopia, which is the age related need for magnifying glasses that occurs in people who have enjoyed perfect vision until sometime after their 40's.
These exercises consist of flexing and relaxing routines, which stimulate the eye muscles, thus overcoming laziness of the eyes. This helps them to perform more efficiently, leading to improved vision.