(A) maintain correct reading and writing posture
1, when reading and writing, the body sitting upright, both legs naturally flat, head and upper body slightly forward, chest from the table a fist, both arms flat on the desktop. Keep the distance between the eyes and the book is about 33-35 cm (a foot), the distance between the fingers and the tip of the pen should be about 3 cm (an inch).
2.When writing, hold the pen at a distance of 3 cm from the tip of the pen, the index finger and thumb do not cross and do not touch each other. The angle of the pen should be appropriate, the angle between the pencil and the paper when writing with pencils and pens is between 40-50 degrees, and strive to write with brushes when the pen is upright.
3, do not tilt your head or lie down to read, do not lie on the table or twist your body to read, do not walk to read, do not read in the shaking car boat.
(B) choose a good visual environment for the eyes
1, reading and writing visual environment requirements.
(1) reading and writing to have sufficient light, window light and desk lamp light from the left front. Do not read and write in too bright, too dark light, such as direct sunlight, in the evening when the light is not enough).
(2) The most comfortable and clear brightness for the eyes is 40-50 watt fluorescent light
(3) Try not to use a pen with a fine lead core to write homework, the lead core should be soft and hard, the paper for homework should be clean, and the writing font should not be too small.
(4) choose the appropriate table and chairs to read and write, the height of the desk to the upper abdomen near appropriate.
2, watching television visual environment requirements.
(1) watching television, people and television sets should be maintained at a distance of more than three meters (or keep the TV screen diagonal distance of more than 5 times).
(2) the height of the TV screen should be parallel to the line of sight of the person watching TV or a little lower. And do not be too off-angle, preferably within 30 degrees.
(3) The TV should be placed in a backlit place.
(4) the TV light brightness should be appropriate, not too bright or too dark.
(5) The room should be well lit, not too much difference between light and dark.
(6) No more than one hour, preferably with a 10-minute break every 30 minutes
(7) The screen should not be too small, and it should be clear and stable.
3, operating the computer visual environment requirements.
(1) The computer screen is best back or side to the window to avoid the phenomenon of reflection.
(2) computer console should be lower than the height of the general classroom desk, the seat is best height adjustable. The center of the computer screen should be on the same level as the chest.
(3) The distance between the computer screen and the eyes should be no less than 50 cm, and the line of sight should be slightly lower than the flat line of sight by 10-20 degrees.
(4) The light in the computer operation room should not be too weak or too strong (12 square meters of the room to install a 40-watt fluorescent lamp to achieve the required illumination).
(C) to develop good eye hygiene habits
(1) Continuous close eye use should not be too long, and should be limited to 40-50 minutes. When taking a break between classes, pay attention to relaxing your eyes, and go outside the classroom or look far away from the window or close your eyes to rest.
(2) Do not watch TV or operate the computer for too long. After watching TV or operating computer for about 40-50 minutes, you should rest your eyes, or close your eyes or do eye exercises, or go outside to exercise or look into the distance.
(3) Do not play or play less video games. When playing occasionally, you should pay attention to the distance between your eyes and the game machine should not be too close, and the duration should not exceed half an hour.
(D) Insist on doing eye exercises
(1) Do eye exercises once a day in the morning and afternoon.
(2) Do eye exercises should pay attention to clean hands, to achieve accurate points, correct techniques, appropriate strength.
(E) ensure sleep, balanced nutrition, and strengthen exercise
(1) Sleep enough to ensure that the eyes get sufficient rest. Elementary school students sleep 10 hours a day, middle school students 9 hours, high school students 8 hours.
(2) appropriate intake of the five major nutrients, high sugar content of food eat less
(3) Do not be picky or picky about food, eat a balanced diet and ensure comprehensive nutrition. Eat a variety of fruits, especially citrus fruits, should also eat more green vegetables, grains, fish and eggs. Eat foods rich in vitamin A (such as carrots, spinach, animal liver, apricots, loquat, etc.) regularly. Drinking more water is also helpful in reducing dry eyes.
Go outdoors more often, participate in more ball games, observe more trees and flowers, and enjoy the green hills and waters of nature more often to relax the eye ciliary muscles.
(1) Actively carry out physical exercise to ensure that students have one hour of physical activity every day.
(2) Playing badminton and table tennis can prevent myopia in the process of playing ball, the eyes must quickly follow the trajectory of badminton and table tennis, which are very flexible “small ball movement” changes, which has unexpected benefits for children aged 5 to 9 years old to improve the function of the eye.
(vi) Establishing an optometric profile
The prevention and control center establishes an optometric tracking file on the visual physiological development of adolescents to assess the development of patients’ visual acuity and provide targeted prevention and control programs for early detection, prevention and treatment. A three-year or five-year optometric file is established annually for students according to grade classification, and students’ visual acuity parameters are regularly followed up and reviewed.
(VII) Binocular vision function and visual training
For patients with myopia, amblyopia, post-operative strabismus rehabilitation, and visual subhealth, optometrists will develop a complete set of individualized visual training programs to improve the quality of vision, improve visual behavior, and raise all visual function abnormalities to the normal range, which will not only solve the visual subhealth of patients, but also prevent the development of myopia. This program is also suitable for young and middle-aged people who use their eyes excessively to restore and improve their normal visual function.
(H) Corneal Reshaping Lenses (RGP)
For young people with rapid myopia growth, the Center uses the most advanced high oxygen permeability rigid night wear keratomileusis (RGP) at home and abroad to control myopia development based on visual training. The lenses are specially designed to be worn on the cornea to produce a specific distribution of corneal epithelium through fluid dynamics and other factors, which greatly improves the peripheral retinal defocusing phenomenon that causes myopia development and effectively controls the development of myopia and the further growth of the eye axis. The lenses are easy to use and can be worn at night while sleeping, and can restore normal vision the next day. 600 degrees or even 8,00 degrees of myopia can quickly achieve a vision of 5,0 or more within 1-2 weeks.
(ix) Parental supervision and implementation
Parents should have a home to correct their children’s bad eye habits in a timely manner, or supervise their children’s implementation of health care vision methods and measures, or personally lead their children to prevent and treat myopia, long-term parental supervision and implementation, health care prevention of children’s vision will be better.
(J) Other precautions
(1) Get enough sleep, do outdoor activities, and look at distant targets.
(2) Vision checkups every 3-6 months or twice a year.
(3) For those with less than 300 degrees of myopia, glasses can be worn in class or during normal times, but not for long periods of time for reading; for those with 500 degrees or more, it is best to have two pairs of glasses and use lighter glasses for reading.
(4) Do not “keep your eyes open”, pay attention to the frequency and complete blinking action by yourself, blinking often can reduce the time of eye exposure to the air and avoid tear evaporation.
(5) Do not blow too long air conditioning, avoid airflow blowing over the seat, and place tea near the seat to increase the surrounding humidity. Blow through, and place tea near the seat to increase the humidity of the surrounding.
(6) avoid long continuous operation of the computer, pay attention to the intermediate rest, usually 1 hour of continuous operation, rest 5-10 minutes. When resting, you can look away or do eye exercises.
(7) Adjust the distance position of the fluorescent screen. The recommended distance is 50-70 cm, while the fluorescent screen should be slightly lower than the eye level position 10-20 cm, a 15-20 degree downward perspective. Because the angle and distance can reduce the demand for refraction and reduce the chances of eye fatigue.