How to buy contact lenses online?
Choose a standard retailer. Contact lenses belong to three types of medical device products, and the sale of contact lenses and their care solution belongs to medical behavior. No matter it is an optical shop or contact lens e-commerce website, it must have a Medical Device Trading Permit before it can be sold. The trend of buying contact lenses online is obvious, and there are a lot of websites of individuals and contact lenses that do not have business licenses. Therefore when the user buys a contact lens on the net, be sure to look for management qualification of Medical Device Trading Permit, guard against being cheated.
KOALAEYE blue light glasses
We take classes online, telecommute and shop online... Cloud life has become the norm for people to work and relax. While it adds convenience, it helps increase the time spent staring at electronic screens, which increases the risk of eye health damage. The latest data shows that mobile Internet users spend 144.8 hours a month on average. Blue-light-blocking glasses are becoming more and more popular. Advertisements for these glasses claim that excessive exposure to blue light can cause a series of eye problems, like eye dryness, eye fatigue, and, in severe cases, loss of vision. In order to protect your eyesight, there is a kind of blue light shielding glasses on the market, claiming to protect against computer radiation and blue light. So what can you choose to prevent blue light glasses?
The material of KOALAEYE blue light glasses has the benefits of ultra-lightweight design, wear resistance, and low friction coefficient. KOALAEYE blue light blockers (with yellow tints) are effective at blocking 100% of the harmful UV rays and relieving eye strain, especially when watching TV and computer. They always pay attention to the quality of their products.
What is the progressive multifocal lens?
The lens of progressive multifocal glasses can change the refraction of the lens at the upper part of the central channel of the line of sight, which can effectively solve the difference of refraction when people view objects at different distances from long, medium, and short distances. Depending on demand, people have the flexibility to change or compensate vision according to visual distance, making it easier to help to adjust your vision in a variety of situations.
What are nose pads?
Nose pads include stipule stalk, stipule boxes, and stipules. The stipules are in direct contact with the nose and play a role in supporting and stabilizing the frame. Certain molded plastic frames may not have stipules and stipule boxes, and the stipules are connected to the mirror ring.
In fact, when designing different materials and different styles, the designer will judge whether nose pads are needed according to the comfort and aesthetics of the glasses. Generally, metal frames are equipped with nose pads, and the nose pads are movable in order to adapt to various nose shapes. Metal frames with nose pads can prevent some people's skin from being allergic to metal. On the other hand, metal looks more rigid and business, and adding nose pads is more beautiful and comfortable. Most glasses without nose pads are sheet-framed glasses. The sheet material is relatively light and non-allergenic. In terms of aesthetics and comfort, no nose pads are more suitable.
What are night driving glasses?
Night driving glasses, also known as night vision goggles, are available in many optical shops or online shops. The color of the lenses ranges from pale yellow to amber, and some night driving glasses also have anti-reflective coatings.
Night driving glasses reduce glare by scattering and filtering blue light. Blue light is the light with the shortest wavelength in the spectrum and is more likely to cause glare when it enters the eyes. Night driving glasses are usually non-prescription glasses with yellow lenses. They usually add some kind of anti-reflective coating to eliminate reflections from street lights and oncoming headlights, which can cause glare.
These yellow night driving glasses have been manufactured and sold for decades. It was originally sold to hunters as shooting glasses. Because in cloudy or overcast conditions, they can make the contrast between the birds and the sky more vivid.
What Are Blue Light Glasses?
Blue light glasses limit exposure to blue light. Additionally, blue light blocking lenses also include non-glare protection. Blue light can be found in cell phones, tablets, computers, some light bulbs, and sunshine. And this particular wavelength of blue light can damage your retina, which can even lead to vision impairment.
However, blue light glasses can filter the harmful ultraviolet rays and reduce the potential damage to your eyes, and may improve symptoms of computer vision syndrome. Even if you do not need a pair of prescription glasses, you should consider a pair of blue light glasses because there are many benefits to them. Hence, in the following section, we will show you the benefits of blue light glasses.
Disadvantages of contact lenses
They require more care than glasses. If you don't clean your contact lenses properly, or if you don't wash your hands before touching them, you could get a serious eye infection. Wearing contaminated contact lenses not only causes damage to your eyes but causes inflammation. If you have high astigmatism, your vision may become blurry when the lenses rotate. And there are a lot of contact lens health risks. There is a lot of news exposed that many informal manufacturers use fake or shoddy materials to make contact lenses, especially for the so-called beautiful contact lens, there are more risks in dyeing and health. The damage to the eyes is unimaginable.
