Việc làm - Rao vặt miễn phí
Bạn có muốn phản ứng với tin nhắn này? Vui lòng đăng ký diễn đàn trong một vài cú nhấp chuột hoặc đăng nhập để tiếp tục.
Việc làm - Rao vặt miễn phí

You are not connected. Please login or register

Protect young eyes before the television

Go down  Thông điệp [Trang 1 trong tổng số 1 trang]

1Protect  young eyes before the television Empty Protect young eyes before the television Thu Apr 26, 2012 8:54 pm

muanhanh


Admin

Myopia is common in infants of lack of foresight, especially urban children, look in the light conditions are not suitable (too bright or too dark), lack of nutrition for the eyes. However, it is possible to watch TV and use the computer the wrong way.


The attraction of the television programs they usually sit near the screen accidentally over. Photo: Le Kien

Why do children easily sighted?
Myopia is a refractive error of the eye as that of the object image blur due to converge in front of the retina. The clear-sighted to look at distant objects have to wear glasses adjusted so that the convergence of the object image on the retina properly, when new things come out sharp and clear. So far, have not found the cause of myopia. All these factors (light, environment, genetics, nutrition ...) just high-risk factors. Therefore, there is no prevention methods are truly effective.



Myopia is common in infants of lack of foresight, especially children of urban living, learning, entertainment and recreation are in close range, look in the light conditions are not suitable (too bright or too dark), lack of nutrition for the eyes. However, it is possible to watch TV and use the computer the wrong way.



Typically, backlight brightness of the TV is always in a certain strength, the initial adjustment of the viewer or the manufacturer's default, the phenomenon can cause blurry lights in the dark background. Characters and images on a TV screen without the stark and sharp as on paper. These characters (pixels) in the central and brightest reduced in intensity toward their edges. Our eyes were drawn to a point called "the rest of the regulatory process" (RPA - Resting Point of Accomodation). This feature makes maintaining the focus fixed on the image becomes more difficult.



To keep the focus on the screen, the regulatory body to exercise, creating a burning sensation, eye strain after hours of watching television. If this situation occurs often and frequently repeated, will lead to regulatory phenomena convulsion, is a prerequisite for myopia. The eye specialist are cautioned not to watch television more than two consecutive hours without breaks eye relaxation.



Before the pictures, audio appeal of the animated film, the children's program, children will be drawn down and distance themselves while watching TV without paying attention. Proximity increases the effects of the radiation emitted from the screen to young eyes, and to force the eye to regulate with a higher level. Currently, LCD TVs use cold cathode fluorescent backlight has minimized the electron radiation. However, a safe distance when watching TV is a screen for at least 4-6 diagonal screen.



To keep your eyes healthy for children
The eye specialist cautioned not to watch television more than two consecutive hours without breaks eye relaxation. Safe distance when watching TV is a screen for at least 4-6 diagonal screen.



For eye protection for their children, parents should apply the following principles:
First, maintaining a reasonable diet, is conducive to the development vision. Few people know that myopia is related to nutrition. In addition to the minerals, vitamin A in fruits, tubers are red, orange, dark green leafy vegetables ... is the tonic for the eyes. Vitamin A helps the eye see clearly in the dark. Lack of vitamin A, the eyes get night blindness, decreased vision, especially for people who read books, to work more with computers. Vitamin A is involved in the exchange of pigment in the retina, helping the eyes adjust to the light condition.



Second, make sure children learn and play in the appropriate light conditions. At school, should take advantage of natural light. If you use the lights are not illuminated directly cause glare on the blackboard, not the varnish on the board. The height of tables and chairs to match the height of children in each different age. At home, do not let children lie, kneel when studying. Keep a distance 45 - 60 cm for the computer screen and from 3m or more for family television.



Tuesday, relax your eyes after every 30-40 minutes on the computer learning. Do not watch TV or play video games more than 3 hours / day and should ensure adequate sleep 8-10 hours / day.



In addition, to ensure healthy eyes, we can also note the product choice of high quality LCD, capable of limiting radiation as well as electronic backlight function customized to each field to avoid damage to the eye. It's also an effective way to help protect your eyes while ensuring access to information needs and explore the world of children. treatment for children - safe fruits

https://traodoitextlink.forumvi.com

Về Đầu Trang  Thông điệp [Trang 1 trong tổng số 1 trang]

Permissions in this forum:
Bạn không có quyền trả lời bài viết