Well, it tells that you really need to get plenty of rest. I assume that you may suffer eye fatigue. Eye fatigue, sometimes may along with headaches may be caused by being highly concentrated on something at work or at home, especially staring at the computer screen all day. As a result, when you close your eyes, your eyes feel burning before you go to bed because of eye dryness, which is attributed to the inefficient tears production. What is more, some of foreign stuff can not be irritated when they enter into your eyes. So it is necessary to look at the mirror carefully to see if there is any thing in your eyes. Then really roll your eyes to see if there anything comes out of your eyes. Besides, you can apply a wash cloth with some warm water (cool the boiled water) to your eyes. Also, if it does not get better in two hours, do not hesitate to see your doctor. By the way, apart from eye fatigue reasons, when you read a book with the watch time keeping, and then you feel eye pain, you should be careful in glaucoma and the possibility of recurrent corneal erosion.