To avoid eye strain, you should take appropriate rest and control the time you use your eyes, for example, when you play computer games or watch TV, you should relax your eyes for ten to twenty minutes after an hour. What's more, you need to replenish water to your eyes to ensure that your eyes are lastingly moist, so you can drip some eye drops. In addition, you need to supplement essential vitamin and materials for your eyes, so you should take more coarse food grain such as maize, sorghum, millet, coarse cereals, fresh vegetables, potatoes, beans and fruits which contain plenty of vitamin, protein and fiber. Also, you can apply warm compress on your eyes, which will help reduce eye strain.