What Are Category 4 Sunglasses? | KOALAEYE OPTICAL

What Are Category 4 Sunglasses?

Why are designer brands in Japan popular?

Japan has long admired the spirit of design and craftsmanship. These designer eyewear brands are often hosted by single designers with strong personal styles. Different styles of glasses design language are highly consistent. Some of these designers have transitioned from fashion design to graphic design, others have been designing glasses all their lives, or even just picked up inspiration in the creative process and started a brand. There are many such designer brands, and the better brands often have very loyal and stable customer groups.


The lenses of prescription glasses

Common materials for lenses include glass, resin, and PC. The glass is fragile and heavy, and few people wear it anymore. PC film is tough and not fragile, but it is not resistant to high temperature and the surface is easily scratched. The most common type of lens on the market today is the resin lens, which is light in weight, hard to break, and reasonable in price. At present, it is generally recommended that you choose resin sheets, and it is recommended that people with ultra-high myopia choose glass sheets.

Generally, lenses can be divided into spherical and aspherical surfaces according to different curvature designs. When choosing, refer to the degree of the eye. For people with lower degrees, There are fewer differences between the two shapes. For people with moderate to high myopia, aspherical lenses will have better imaging effects and clearer vision.

When choosing a lens, a parameter that is often mentioned is the refractive index. Common refractive indexes are 1.56, 1.60, 1.67, and 1.74. With the same degree, the higher the refractive index, the thinner the lens.



Can you wear blue light glasses while driving?

The damage of blue light has a cumulative effect. The longer the exposure time is, the more serious the damage of retinal cells will be, which will eventually lead to irreversible damage of the structure and function of the retina. Once the retina has permanent damage, degeneration will directly affect the metabolism and function of photoreceptor cells, resulting in vision loss. It depends on the glasses you're wearing. The function of anti-blue light glasses depends on the material of the glasses. Some blue light glasses have a special anti-reflective coating, which can reduce glare. These glasses are definitely helpful when driving at night.


How To Choose Better Night Driving Glasses?

You should select light alloy material and polymer material with memory, collision resistance, and low friction coefficient characteristics. It can effectively prevent the damage to the eyes and face caused by the friction of the broken lens frame during use. Because of its specific molecular structure, the chemical resistance is good. In the high-temperature environment. it is not easy to deform and can withstand 350 degrees in a short time of high temperature, not easy to melt and combustion. The glasses made of this material are light and strong, and the ears will not be uncomfortable because of wearing the glasses for a long time.



The characteristics of metal material

The material of metal glasses frame chooses some kind of metal material or alloy to make mostly. Most of the copper alloys are treated as the base material and then have surface treatment processing. Then there is the recent rise of pure titanium frames and those made of memory alloy. Metal frames are usually equipped with nose pads, which are movable to accommodate a variety of nasal shapes. The end of the temple is often covered with a plastic cover, not only beautiful but also to protect the temple and skin.


Many Different Kinds Of Glasses From KOALAEYE

The anti-blue light glasses, driving glasses, and so on make the function of the glasses pretty powerful. They have efficient ultraviolet absorption. They are not easy to absorb dust and impurities. Each pair of KoalaEye glasses has to go through a number of major production processes to meet you, just to give you a new visual enjoyment. KoalaEye is available with non-prescription and prescription driving glasses, both with anti-reflective coating. Driving glasses reduce glare by scattering and filtering the harmful blue light.


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Where can I buy prescription glasses online?

Eyeconic

Eyeconic was created by the nonprofit VSP, and one of its missions is to make eye health a priority by making prescription glasses available online. There are more than 1,500 styles of frames, including basic prescription lenses. You can filter the frames according to your face shape or a special size like small-face glasses or low-bridge glasses. You can use Eyeconic's virtual try-on feature. The feature combines a five-second video with a photo to give you the most accurate evaluation of your face. The glasses can be returned within 60 days for a full refund. The purchase of each pair of glasses has to go through 25 stages of inspection. Every pair of high-quality glasses and contact lenses has the same level of care. The mission is to help you find the best glasses or contact lenses for you and take care of the eyes behind them.

Liingo Eyewear

You can find everything from classic understated styles to bold, prominent frames. It's stylish and enhances your vision. In addition to the virtual try-on feature, you can choose from up to five different frames to try out at home, absolutely free. All frames come with free standard prescription lenses, or you can add lenses like progressive lenses and high refractive index lenses. If you're not sure which lens is best for your prescription, you can contact a trained optician who will assess your needs and offer you specialized advice. Liingo supports any adjustments you need.

KoalaEye Optical

KoalaEye is a new brand of glasses. From concept, design to manufacturing, we control and supervise the entire process. This allows us to save on the cost and give you a favorable price. KoalaEye provides everyone with high-quality glasses at an affordable price.

There are many ways to choose sunglasses, but shouldn't everyone have an affordable pair of glasses to make themselves look good? KoalaEye believes that everyone should have a pair of high-quality glasses, and more importantly, affordable. When sunglasses are an indispensable part of our daily life, the price should not be too high. KoalaEye would like to provide more economical glasses for people all over the world.

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