The first point: pay attention to the distance between the eyes and the book when reading: when reading, the distance between the book and the eyes is best kept between 30 -35 cm. The second point: to develop good reading habits: not to lie down to read, in addition to walking or riding in the car do not read books. The third point: reading light: the reading surface of the light to be appropriate, China’s current average illumination for the class desktop regulations is not less than 150 LUX. light to be free of dark shadows shade, uniform not dazzling, so in the strong direct light reading is not suitable. The fourth point: the continuous reading time: reading time should not be too long in general, every 45 minutes after reading, should rest 10-15 minutes, should look up to the distance for a moment, and do eye exercises, or to go outside activities.