When watching television to pay special attention to protect vision, should generally pay attention to the following points: 1, the location and distance of the television set: the placement of the television set should be placed as far as possible in a more ideal corner, the height should also be appropriate, not too high or too low, the center of the television screen is best and the eyes at the same level or slightly lower, in general, the distance between the television set and the person should be 4-6 times the diagonal of the screen, you can also use Simple method of measurement: straighten one hand forward, palm horizontal, close one eye, if the palm of the hand just cover the TV screen, the distance is more appropriate, in addition to watch TV, it is best to sit directly in front of the screen, if sitting next to the viewing angle of less than 45 degrees. 2, the contrast of the TV and room brightness: the contrast of the TV is too large, the light brightness is not uniform, vision needs to be more focused, easy to cause eye fatigue, the contrast is too small, the image color is not distinct, it is not easy to see clearly, some people like to watch TV when the lights in the house are turned off, so the brightness of the screen and the surrounding dark environment to form a sharp contrast, in the long run so that vision loss, so When watching TV, the house light is not too dark, not too bright, you can open a small soft light or red light cannon in the house, so that the eyes are not easily fatigued.