Explanation of visual field When we gaze at an object directly in front of us, without turning our eyes, we can see the scene around the object in addition to the object; when there is an object next to us, we do not need to turn our head, but just use the afterglow of the corner of our eyes to know, although we can not see very clearly, this kind of spatial extent that can be seen with the eyes is called visual field in medicine. As opposed to central vision, it is peripheral vision. Four methods of eye care Van human organs, the eyes are important, as everyone knows, but the eyes are very delicate. The ancients attached great importance to eye health, generations of medical doctors have advocated the “eye should always be transported”, and figured out a wide variety of simple and easy to learn eye care method, is introduced four: 1, closed eyes relaxation method meditation closed eyes for a moment, with two palms lightly cover the eyes, two elbows supported on the edge of the table, the whole body muscles try to relax, 30 seconds later, open eyes flash blink multiple times. Do this 3-5 times a day. This method can significantly improve vision, especially for the middle-aged and elderly who often read and write. 2, into the quiet eye method sit upright, the whole body relaxed, eyes slightly closed, hands on the knees, palms up (with cardiovascular disease palms down), the heart to change the idea: I am in the gas, gas in me, the unity of heaven and man, gas for my use, meditation for 15 minutes, then slowly open your eyes, deep breath three, gas sink down the Dantian. Do it once a day in the morning and once in the evening. 3, far-seeing massage method Every morning, in the fresh air, eyes closed, eyes from the right to the left, and then from the left to the right each turn 5 times, then suddenly open the eyes, extremely far-seeing; calmly end standing or sitting, with eyes in turn look at the left, right, upper right corner, upper left corner, lower right corner, lower left corner, repeated 5 times; with clean two hands middle finger from the bridge of the nose on both sides of the inner corner of the nasal recess, from top to bottom circular massage orbital, and then blink 20 times. 4, turn the eyeball method Sit on the edge of the bed or chair, turn both eyes to the left 5 times, and look flatly ahead for a moment. Do this once a day in the morning and once in the evening, do not interrupt, and you will see results over time. An old man’s vision in middle age was 0.3 in the left eye, 1.0 in the right eye, after 20 years of morning and evening eye exercise, the last three years of physical examination of binocular vision are 1.5. adolescent myopic eye long-term exercise also has a good effect.