Advantages and disadvantages of transitional sunglasses lenses??
If you wear glasses, you will become familiar with the trouble of dealing with the sun. Carry glasses and sunglasses with you, switch back and forth every time you go out, and then come back. A simple option is to wear glasses with Photochromism or "transition" lenses. When you enter, these special lenses darken and then brighten in the sunlight.
Photochromic lens have existed for decades. Once upon a time, glass lenses were your only material choice, and gray lenses were your only color. But today's Photochromism glasses have many materials and a range of lens colors.
Depending on the type of lens and brand, Photochromic lens will darken due to different processes. The earliest glass Photochromic lens relied on Silver chloride or Silver halide to react with ultraviolet light and become dark. Most Photochromic lens today use proprietary dyes that, after chemical changes, darken the lenses when exposed to ultraviolet light.
Is' transition lens' suitable for you?
Glasses with Photochromic lens do offer convenience, but are these types of glasses suitable for you? The following are the advantages and disadvantages of Photochromism glasses:
Advantages of transition lenses:
They are very convenient. You can use these glasses in most situations, whether indoors or outdoors;
They provide continuous UV protection and you will no longer forget your sunglasses, nor will you have to worry about traveling outside;
They won't easily get lost. When you don't have two pairs to track, you and your child are unlikely to lose their glasses;
They have a variety of styles and colors to choose from, which can meet the prescription needs of most people. If you need shatterproof lenses, bifocal glasses, progressive lenses or other special needs, you can almost certainly provide Photochromic lens;
They can save money, and you may not need to purchase prescription glasses and sunglasses.
Disadvantages of transition lenses:
Depending on the brand, they will darken and brighten. Some people also need a longer time to change. Discuss your needs and choices with eye care professionals;
In cold weather, they require longer time to adjust;
They will not darken in the car. Car glass has certain UV protection function to prevent Photochromic lens from darkening. Some shots aim to help solve this problem;
Today's advanced high-quality glasses equipped with Photochromic lens may not be a waste, but it is a wise solution for many people. Consider whether they are suitable for your lifestyle.
