Posts Tagged ‘transition glasses’

Transition glasses are equipped with transition lenses which are a brand-specific type of photochromic lenses. Transition lenses use photochromic technology to assist user vision through a range of light condition, which will darken when exposed to ultraviolet light.

Transition glasses are produced in a sterile, dust-free manufacturing environment so airborne particles and dust do not lodge in the lens material. A liquid containing millions of photochromic molecules is applied to the front surface of the lenses after they are heated gently so that the lenses become porous. The lens acts like a sponge, absorbing the photochromic material into the top layers. Once the liquid has dried, the lenses are UV sensitive and will change from clear to dark. When exposed to UV light, the molecules become energized and activated and cause the lens to darken. After the lenses are coated with the photochromic liquid, they can scratch very easily in their raw state. So, Transition glasses always receive a scratch resistant coating.

Transition glasses are different from standard lenses as they develop tint when exposed to UV rays. This means users don’t need a separate pair of prescription sunglasses, as the transition lenses will form a tint to shield their eyes on sunny days. This can be tiresome, especially if you are going from shop to shop on a hot summer’s day and can’t see price tags due to the tint on your sunglasses. Switching glasses is not only irritating, but can also increase the chance of a pair being left in a cafe or restaurant. Glasses that can rest on your face for the whole day are much less likely to go astray.

Transitions glasses don’t only produce a tint on glorious summer days. UV rays are present even on cloudy days and these rays can damage your eyes if experienced for prolonged periods. Transitions lenses produce a pale tint on overcast days, with the tint becoming darker as higher levels of sunlight occur. When indoors, Transitions lenses become clear again, meaning you can watch TV or read a book without the tint disturbing your vision.

Transition glasses were formulated to take the hassle out of changing glasses for outdoor and indoor tasks. Transition lenses may not react, however, when driving a car. This is due to the fact that most windscreens come fitted with some UV protection in the glass. If the windscreen inhibits UV levels sufficiently, there may not be enough UV to activate the tint in the glasses. Many people who use Transitions lenses keep a cheap pair of sunglasses in the car due to this lack of reaction.

For people without much experience of wearing eyeglasses, it is hard to understand transition glasses from the meaning of these words. Transition means the process or a period of changing from one state or condition to another. How can this term be used in eyewear products? In fact, these are an advanced form of eyeglasses that really involve different transitions. The exact part that brings such transition is the lenses, which can change their darkness according to the surrounding environment. It is widely known that sunglass products currently available in the market come in different darkness in their lenses. In a typical case, a light pair does not give enough protection in bright sunshine. And an opposite case is that a dark pair blocks excessive light and brings an uncomfortable feeling, especially while driving. For lots of sunwear users, this is a dilemma which is hard to conquer. However, the development of transition eyeglasses provides a perfect workaround.

In simplest words, transition glasses use lenses that are self-adjustable in terms of darkness. They can change from dark to light and clear according to different light conditions. These glasses will not cause users to squint in sunlight or fumble in poor light. In detail, these glasses are clear indoors and darken automatically in response to sunlight outdoors. When staying indoors, they function as regular prescription eyeglasses because the lenses are fitted according to the wearers’ specific prescriptions. Moving to an outdoor environment, they serve as sunglasses, or exactly prescription sunglasses. It is equally feasible to get 100% protection against the sun’s harmful UV rays.

This adjustable attribute of transitions eyeglasses is very helpful, because it brings unparalleled convenience. It is very convenient to use a transition pair in both indoor and outdoor conditions. In fact, transition glasses are just products from Transitions Optical Inc. A wider concept of these glasses is photochromic eyeglasses. Currently, most popular brands use the photochromic lens technology that is owned by Transitions Optical Inc., which has led most eye care practitioners and customers to refer photochromic glasses to transitions glasses. Actually there are some other brands which use their own photochromic lens technologies.