To Prevent the Decline of Eyesight

With the acceleration of the pace of life, people’s work pressure is increasing day after day, which indirectly does great harm to the eyes. Meanwhile, the air pollution, chemical substances, malnutrition and bad living habits, etc may be the main reasons leading to the decline in vision.

Thus, in order to protect the eyesight with eyeglasses, people should attach great importance to the daily hygiene, among which, to maintain a balanced nutrition is essential.

First, people are required to provide adequate vitamin A: Vitamin A is an important raw material to build up photosensitive substances of eyes, and it contributes greatly to the protection of eyes and other epithelial tissues. Besides, it can indirectly resist eye infection. Sufficient Vitamin A, at the same time, can increase the smoothness of the eye cornea, so that eyes will look brighter and clearer.

Second, add sufficient protein: the rhodopsin on eye retina is composed of protein. By the lack of it, other than weak muscle, dysplasia and infection, the phenomenon like edema, anemia and even visual impairment can be occur. Therefore, short-sighted people are recommended to eat foods in higher protein, such as lean meat, fish, milk, eggs and soybean products and so on.

Third, calcium and phosphorus are indispensable: both of them have the ability to make sclera tough and participate in physical activities of optic nerves. The deficiency of calcium and phosphorus can easily lead to high incidence of eye fatigue, distraction, and bifocals as well.

Fourth, to add adequate vitamin C, B1and B2: Vitamin C is an important nutrient of eyes. The short of intake will result in eyeball turbidity, and even worse, it is one of the important reasons for cataract. The food that is rich in vitamin C includes orange, mandarin, grapefruit, tomatoes and a variety of fruits and vegetables.

Vitamin B1 and B2 are essential materials participating in nerve cell metabolism including the optic nerve. They can not only help protect eyelid conjunctiva, cornea as well as bulbar conjunctiva, but also prevent and delay the formation of furrows on the side of eyes.

The last but not the least, trace elements cannot be ignored: although the content of trace elements accounts for less than one percent in the human body, they still play a great role. Without them, it is difficult to carry out metabolism, and hence people’s health will be affected. Trace elements such as zinc, chromium, molybdenum and selenium, also participate in the metabolism of various substances, to regulate their physiological functions, so they cannot be neglected.

As a saying goes, diet cures more than the doctor. In the matter of eating, people should keep a balanced nutrition to maintain a healthy body, so that the eyeglasses , to some extent, can get a reasonable protection.

General Introduction of Myopia

In recent years, the situation of myopia has become more and more serious. The number of its people has increased sharply. Around the world nearly all countries and cities have this problem of myopia. This situation is very prominent in the developing countries. And the situation in the Asian is more serious than in the European. The rate of bifocals development in Asian countries is about 70%-90%; while that are 30%-40% in American and the European countries. Moreover myopia of woman is more serious than man — myopia of woman is two times as that of man.

How does the myopia form? How does it increase so rapid?

Myopia is one kind of ocular disease that caused by incorrect refraction. Under the premise of static refraction, the distant object cannot gather in the retina, but form focal point in front of retina, thus cause the vision to distort, and make the distant object to be slurred. Often, people first form the pseudo-myopia. Pseudo-myopia is one kind of myopia, which is also called the adjustment bifocals. Look or read for a long time causes ocular adjustment not to relax, and excessive eyestrain leads to pseudo-myopia. There is an essential difference between pseudo-myopia and real-myopia that for pseudo-myopia, people also have the opportunity to return their vision to normal strength as long as pay attention to wise use of eyes and develop a good habit of reading and writing.

The formation of myopia can be attributed to two major reasons. One is hereditary factor, the other is environmental influence. Many researches show that myopia is also a hereditary disease. This hereditary factor mainly refers to people who have quite high vision strength. These people commonly inherit their myopia to their children. Generally, if parents are high myopia, the rate of nearsightedness is quite high for next generation. But such persons are certainly in the minority. Hence, the hereditary factor has to some extent influence on bifocals.

Meanwhile, the environmental influence is the main cause for myopia and its sharp development. Such environmental influence includes improper use of eyes and the bad habits of reading and writing, such as reading under the insufficient light, reading laying the bed, reading on the bus and so on. Therefore, if people want to have a good vision, they should pay a little attention to the daily habits and constantly correct the wrong postures.

In addition, the myopia often occurs during the teenager period because the growth of teenager is much rapid and important than any of other period, and most of habits are developed in this period. So bad habits of reading and writing directly affect teenager’s growth and health.

Therefore, if you want to have a pair of bright eyes, protect your eyes at once!