What Do Progressive Glasses Mean?
Progressive lenses, also called PALs, are the most popular multifocal lenses today. They offer an effective and great-looking vision solution for individuals with presbyopia. The main benefit of progressive lenses is that they do not have a visible line bisecting the lens, but rather a seamless and gradual change in power as you move down the lens.
Rather than two or three distinct zones, progressive lenses offer a smooth transition of focal powers that covers the total range of clear vision from close to far and every point in between.
Pay attention to the color of your blue-blocking glasses.
For children, their lenses are relatively clean and clear, and the blue light transmittance is higher than that of adults, which is more harmful to the eye. On the complementary color principle of optics, a good pair of blue light glasses should not be deep orange, but light yellow. The complementary color to cyan is orange. So, in order for the glasses to absorb blue light and filter it out, they must appear blue's complementary color yellow, otherwise, they violate the optical principle of absorbing blue light.
When does the optical store have a special offer?
A good beginning is half the success. The new store opening needs to quickly expand awareness, and it is a marketing. old for new activities, means that as long as the unused glasses can be worth 30 yuan. Or the chain of glasses, to celebrate the New Year gift promotion plan, really play the role of promotion and atmosphere, promote sales.
Benefits and disadvantages of rimless glasses
Rimless glasses are more stylish colorful, and comfortable to wear, greatly easing the pressure on the bridge of the nose and eyes, and because there is no frame limitation, the wearer's field of vision is wider. They are loved by young people. After a period of time, the screws at the hole are easy to loosen. The wearer should often tighten the screws.(https://www.koalaeye.com/collections/rimless-glasses)
The quality and reputation of the store owner are affected. And because there is no support bracket, when the glasses are placed on a hard object, they will directly contact the lens, which is easy to cause lens wear. In addition, when the rotation or torque force is encountered, the force will directly act on the lens, so when the force is too large, it is easy to cause damage to the lens.
Phone can identify polarized sunglasses.
Take a mobile phone with an LCD screen, turn it to maximum brightness, and look at the LCD screen through the lenses. Make sure the lenses are parallel to the display, and then slowly rotate the phone. When the true polarized lens is rotated at a certain angle, the light from the display becomes obviously darker, or even pitch-black. If they're not dark, they're not polarized sunglasses.
What is the bifocal lens?
Bifocal reading glasses are characterized by distance vision correction in the upper part of the lens and near vision correction at the bottom. If you need help with both, that's great. This lens is designed to facilitate the working of reading glasses and standard prescription glasses, all in one frame. Glasses are recommended when you are diagnosed with presbyopia, and bifocals are usually the first choice. But for intermediate vision, bifocals are difficult because they're not close enough for the reading part of the lens, and they're not far enough away for the distance part of the lens. Bifocal sunglasses have no magnification at the top, and the reading ability is at the bottom of the lens. Bifocal reading glasses can be found anywhere reading glasses are sold, but they can be harder to find than full magnifying lenses.
Casual glasses
Casual glasses mainly focus on comfort. After work, it can be used for parties, going out, and other occasions. And touch texture is very good, and let you feel more comfortable when leisure, more relaxed. At the same time, simple and unique design, while increasing the sense of fashion frame, let your leisure occasion attract people's eyes. In addition to being very comfortable, the casual eyeglass frame perfectly combines modern and classical styles and colorful styles for your choice, combining personality and comfort.
