How do middle school students protect their eyesight? More than 500 words. I'll add 50 points for good writing!

Use your eyes scientifically, keep doing eye exercises, avoid daily life and check your eyesight regularly. 1. scientific eyes (1) students should protect their eyes and read and write correctly: when reading or writing, the best distance between their eyes and the book is about one foot. To this end, the height of tables and chairs should be properly matched, and high chairs and low tables or low chairs and high tables are not conducive to the health of eyes. Don't tilt your head when writing, and don't read books or newspapers when walking, riding or taking a boat. (2) Students should protect their eyes. Appropriate reading and writing time: Reading, writing, drawing and other eye time is too long, which is easy to make eye muscles tired and lead to myopia. Therefore, every hour of reading and writing, you should go outdoors for 10 minutes, which is an effective way to eliminate eye muscle fatigue and prevent myopia. (3) Students should have enough light to protect their eyes: Adequate light is an important aspect of maintaining normal vision. You should not read or write in too dark light, such as dusk and darkroom. When reading and writing at night, the lights should not be too dim, shaking or dazzling. The light should come from the left front to avoid shadows blocking the line of sight. Do not read or write in strong light (such as sunlight or dazzling light) or in the shadow of flowers to reduce the adjustment burden of intraocular lens and ciliary body. (4) Students should protect their eyes from watching TV for too long: TV is a dynamic picture, which is most likely to lead to eye muscle fatigue and myopia. Therefore, watching TV should not be too long, generally should be controlled within 2 hours, and rest for at least 5 minutes every 30 minutes to give your eyes a rest. The distance to watch TV should be appropriate, generally 2 meters away, and the angle should not exceed 45 degrees. In the room watching TV, there should be a certain brightness of the lights. You can turn on a small light, but don't direct the light at the screen or eyes. It's best to put it in the back or next to it. When debugging the TV, the jumping picture on the TV screen is very harmful to your eyes. Please close your eyes to avoid irritation. 2. Insist on doing eye exercises. Doing eye exercises is an effective way to prevent myopia and should be adhered to every day. Never learned, you can gently massage the upper and lower eyes, or close your eyes to help the recovery of eye muscle fatigue. 3. In life, we should avoid strengthening physical exercise, advocate outdoor activities, often bask in the sun and breathe fresh air. Life should be regular, go to bed early and get up early, and keep enough sleep and proper rest. Pay attention to nutrition, don't be partial to food, don't eat snacks, eat vegetarian and vitamin-rich foods and calcium-supplemented foods, such as pork liver, milk and eggs. 4. Check your eyesight regularly. Check your eyesight regularly and adjust your study and maintenance according to your eyesight. 5. Preventive prescription cassia seed decoction, instead of tea, is often effective.