Getting to Know the Secrets of Transitional Eyeglasses

Getting to Know the Secrets of Transitional Eyeglasses

With the high development of optical industry, various kinds of eyeglasses are available in current optical market. So are the transitional eyeglasses. These eye wears are made with special function. They are also called photochromic eyeglasses with special lenses that darken on exposure to ultra violet radiation. Once the ultra violet is removed, for example you walk indoors, the lenses will gradually return to clear state. The lenses can be made of glass, polycarbonate or another plastic. With this unique feature, they are receiving a great popularity among fashion followers.

The transitional eyeglasses were firstly developed by Corning in the 1960s, but the popularity of them was introduced by Transitions Optical in the 1990s. As a matter of fact, because of the popularity of the Transitions trademark, these lenses are also called transition lenses. They are more vastly called photochromic lenses. The different materials of the lenses work different. The glass lenses achieve the features through the embedding of microcrystalline silver halides (usually silver chloride), or molecules in a glass substrate. Plastic photochromic lenses rely on organic photochromic molecules to achieve the reversible darkening effect. The reason these lenses darken in sunlight but not indoors under artificial light is that room light does not contain the UV (short wavelength light) found in sunlight. So as for glass or plastic material, the working principle of them is different.

Although the transitional eyeglasses are so popular with different people, they are not suitable for every one. Many people seek fashion statement ignoring their own eye conditions. Wearing wrong pair will cause worsening of eye visual condition. The following people are not suitable to wear the photochromic glasses. For many people who are suffering from myopia, the eyeglasses are to correct vision condition and achieve a clear vision. The other important purpose is to balance the adjustment function of eyes. But the transitional eye wears will cause them losing the balance. People who have a strong power shouldn't wear them for they are with poor visual condition, the photochromic lenses will cause the fatigue of eyes and burden the pressure of eyes. Those who have eye diseases like cataract and glaucoma are not suitable. If you have the similar visual problem, it is better not to wear transitional eyeglasses.

Wearing transitional eyeglasses is to achieve beauty. But it is dangerous to seek beauty with sacrificing health. After all, an individual's health is much more important comparing beauty. Certainly you can own both beauty and health with the development of current medical and optical industry. Various options are ready for you!

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