Heavy eyes or tired eyes are one of the biggest prices we pay for lack of sleep. Although it is not a disease, and does not require medical treatment, it makes us look older than others. There are so many reasons and symptoms for heavy eyes. First, working on the computer for long time,for this case, you should take a rest in regular time or do some eye exercises. Second, the light in your room is gloomy, this will bad for your eyes. You should you have the room lit evenly, so your eyes don't have to work as hard. Third, lack of sleeping to cause the tired eyes. It is very important to keep eight hours a day to improve our eyesight. Last one point, you will feel heavy eyes if your glasses or contacts are not up-to-date, for this, you should update your glasses or contacts usually. Don't worry much about your heavy eyes, it will be changed to be better in a short time.