Glasses’ function is not only vision correction. The glasses are needed for many special eye diseases as well as special job posts. Therefore, the glasses have been endowed more values.
1. glasses VS children’s strabismus and amblyopic.
If some children’s strabismus and amblyopic are immediately corrected, they could restore their vision rapidly. One of the main treatment methods for strabismus and amblyopic is to wear the glasses whose function is to correct defects of vision.
2. glasses VS low vision
The best corrected vision of the low vision suffers is less than 0.3 or visual field is below 10. For those people, they often select and use frame glasses as hearing aids. In addition, some people with the defect of visual vision caused by ocular trauma also can use some special glasses, such as Fresnel, achieving the effect of expanding visual field.
3. glasses VS safety
It is very early that people have recognized that when the sun is particularly strong, the eyes will feel uncomfortable, but the glasses can keep out the sunshine, so sunglasses come into being. In fact, the real factor is ultraviolet ray which is most harmful to our eyes. With the change of the earth’s environment and ozone destruction, the opportunity of touching with ultraviolet ray becomes much more and more when doing outdoor activity. Therefore, the issue of how to reduce hurt on eyes attracts more and more people’s attention. Actually one of the most useful tools is glasses, especially frame glasses. They can effectively resist ultraviolet ray.
4. glasses VS fashion
Glasses are a symbol of fashion, and how to design novel ones becomes a most important part of seeking fashion. According to statistics, the medium -income people of developed countries, each person has at least seven pairs of glasses in different styles.
With the development of science and technology, the materials of glasses are more and more varied and their functions become more and more perfect.