Photo-chromatic Lens: Your Eyes Are Precious Protect Them.

Protecting your eyes from the ultra violet rays of the sun is very important and if you are searching for eyeglasses then make sure that you get a pair of photo chromatic lenses for your eyes. Photo chromatic lenses may be made of plastic, glass or polycarbonate but the material of the lens contain molecules that react to the UV rays of the sun. The lens darkens when expose to the sun and protects your eyes from straight contact with the UV rays of the sun.
Late sixties were the time when photo-chromatic lenses were primarily launched. In those days buying these lenses use to cost a fortune but these days they are easily available with wide varieties of frames and for reasonable prices. The earliest photo chromatic lens was developed in the late sixties and microcrystalline silver halides were used to provide photo chromatic properties to the glass lens.
The remarkable properties of these lenses were applied on plastic lenses after utilizing them on high index lenses. Naphopyrans and oxazines have provided the plastic lenses with the outstanding photo-chromatic properties. These lenses have the great property of getting darker when exposed to sun. These lenses protect your eyes from the harmful effects of direct sunlight and also make you look stylish.
If you spend most of your time working or playing beneath the sun your choice of lenses should be photo-chromatic. People from various professions wear these eyeglasses. These eyeglasses are preferred mostly by all individuals, sportsman and professionals. Beside everything else these lenses are preferred for all daytime activity like playing, driving and working. One of the exclusive features of these lenses is that they do not turn darker when you are in some room or covered place.
Photo-chromatic lenses are very comfortable and are available with varieties of frames to select from which makes you look stylish and graceful. The distinctive quality of getting darker in daytime has made these lenses very famous among everyone who is involved in outdoor activities.
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