The following people who use computers for a long time: 1, poorly ventilated office environment, and a variety of office equipment; 2, have a high degree of refractive error; 3, poor fusion and collection function; 4, their own refractive error is not corrected or wear glasses with an inappropriate degree; 5, the eye has chronic conjunctivitis and other eye diseases; 6, easy to emotional impatience or depression; 7, unbalanced diet and disorderly work and rest time.