It's too tired for your eyes after reading novels,and under this circumstances.The first point is to overlook in the free time and insist on doing some eye exercises when your eyes feel tired.The most simple way is to relax your brain slowly.Secondly.Pay attention to your usual habit of using eyes and let them take a break regularly.Try to avoid staying up too much.If you have to work at night in front of computer,please don't forget to drink some water every twenty minutes.Thirdly.Daily diet can make up what your eyes lack, such as Vitamin A,Vitamin C ,Vitamin D,friut and sea products which are good for your eyes.