First of all, eyes have to rest when it works two hours later. Then you should insist doing eyes exercises twice a day. It is good for eyes to look farther some times. Don’t read in a bed or driving cars or the place where is dark. Don’t read under the sun. If there are something in your eyes, don’t rub, you should flush with the boiled and cooled water. If it hasn’t reason. you must ask for doctors. If you must narrow the eyes to see things clearly, then you should wear glasses.