The frame of prescription glasses
At present, the more common materials for frames are non-metal and metal. Non-metals mainly include TR90, sheet material, etc., and metals include alloys, titanium, and so on. TR90 and sheet material are actually plastics, but they are firm and are not easy be deformed at room temperature. Also, they have good formability so that they can be made in many fashionable styles. The general alloy material has good firmness and flexibility, but the disadvantage is that it is easy to fade. The pure titanium frame is corrosion-resistant and very strong. It is about 40% lighter than the general alloy frame. It must be welded and electroplated in an oxygen-free state, which requires high equipment and technology. Relatively speaking, the price of TR90 and alloys will be lower, and pure titanium will be more expensive. You can choose according to your budget.
Do night driving glasses really work?
Yellow lenses reduce the amount of light entering your eye, reducing visibility. These darker colors block more blue light than yellow lenses. But they block more light from entering the eye, reducing visibility even more in low-light conditions. In fact, even yellow lenses reduce overall visible light to some extent because they block some blue light. This can be a good thing during the day, but not at night, when maximum visibility is key. Night driving glasses come in a variety of yellow and amber colors. The darkest lenses filter out the harshest light, but they filter out the largest amount of light, making it difficult to see in dim or dark conditions. Some people who wear night driving glasses say they can see better with them on. However, vision tests have shown that night driving glasses do not improve night vision, nor do they help drivers see pedestrians any faster than they would without glasses.
You can buy glasses of new eyewear brands.
Some emerging glasses brands are completely independent brands. Their own processing team and the processing instruments are imported instruments. The processed glasses are very standard, and the work is very careful. There are many choices for styles. The most important thing is that the color is good, it is not allergic, it is not easy to fade, and it can go with everything. Whether from their own grade or design, they have their advantages.
Crystal clear eyeglasses
The trend is to make everything bright and clear. Frame shapes can be small and round or thick. Some have subtle colors like blue or gray, which makes the glasses look more jewel-like. Whichever you choose, a clear frame will help improve your style. Transparent, translucent frames have gone from being a bold fashion statement to a common, versatile option in the last few years, and now eyewear has more options than ever before. These frames vary from heavy traveler style to a more elegant corner frame to balance out your facial features. No matter what color or hue you choose, these clear frames show off your personality.
How to test a blue-light lens?
Blue-light-blocking lenses are now focused on refractive indices of 1.56 and 1.60. If you buy lenses that are not of either refractive index, be wary. Of course, with the development of technology, now some brands have produced 1.71 refractive indexes blue-light-blocking lenses, suitable for people with high myopia to wear. The true lens package should at least have the product name, refractive index, dispersion coefficient, transmittance, color, SPH, CYL, and other indicators. These indicators are perfect, can be treated as the reference basis of the formal product. In addition, you can go to a professional optical shop or testing institutions for testing.
How do blue light glasses work?
Using anti-blue light lens film reflection technology, the glasses reflect harmful blue light, so the surface of the lens reflects blue light, and the substrate absorption technology of the anti-blue light lens will not reflect blue light. Anti-blue light glasses mainly reflect harmful blue light by coating on the surface of the lens, or absorb harmful blue light by adding anti-blue light factor into the substrate of the lens, to realize the blocking of harmful blue light. The blue light intensity emitted by the mobile phone screen was effectively suppressed by the use of anti-blue light glasses, compared with a portable spectrometer.
Different Types of Progressive Lenses
The short corridor progressive lenses that are designed to fit into small frames. They trade practically for a more fashionable look. Some people have difficulty transitioning to short corridor progressive because of the lens size and vision can feel more distorted sometimes because of this.
Transition progressive lenses are the last type. They are a brand of photochromic lenses. These lenses darken when exposed to UV light to provide shade for your eyes. They operate as a useful alternative to sunglasses.
