The refractive index of the lens is related to the thickness of the lens.
The main factors that determine if a pair of finished glasses are beautiful, portable, and comfortable depending on the thickness and thinness of the processed lenses. Depending on the material, the index of refraction is different. If you just look at the refractive index, the higher the refractive index at the same degree, the thinner the lens will be. The thinner the lens will be, and the more beautiful the lens will be. However, the higher the refractive index, it is not the better. You can choose the refractive index lens suitable for yourself. But the refractive index is not the only factor that determines lens thickness. Think about the distance between your eyes and the size of the frames you choose, which can affect the thickness of the lenses you match. The larger the pupil distance, the smaller the frame, and the thinner the lens.
Blue Light Glasses Benefits
As mentioned above, blue light glasses are good for our eyes. What are the other benefits of blue light glasses?
1.Reduce Eye Strain
One of the benefits of blue light glasses is reducing eye strain. Looking at a screen all day can make you feel stressed, or you may experience eye and muscle strain. So, the blue light blocking glasses can help to reduce eye strain.
2.Better Sleep
Blue light has a high frequency which can increase alertness and delay the body’s release of melatonin. So, you had better turn off your device an hour or two before going to bed. Or you can choose to wear a pair of blue light glasses to sleep better.
3.Fewer Headaches
Wearing blue light glasses can effectively help you to reduce headaches.
4.Fewer Eye Diseases
A large amount of blue light is bad for our health. So, wearing blue light glasses can reduce the chance of eye diseases.
With so many blue light glasses benefits, do you want to get a pair of blue light blocking glasses? If so, you can try the Koalaeye Optical blue light blocking glasses. It enables you to wear comfortable and look in style at a reasonable price.
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.
Single Vision Lens
Single vision is the most commonly used prescription lens. This lens type has a single field of view or a prescription ability of the entire lens and can be used to correct myopia (nearsightedness) or hyperopia (supervision). Some people need glasses to keep their distance and read. Instead of having a pair of single-vision glasses for each pair of glasses, bifocal or progressive glasses may be a more convenient choice. Unlike single vision, bifocal and progressive lenses are multifocal lenses with multiple focal points, such as distance and near distance. People whose prescription for spectacles list the numbers in the 'ADD' section require bifocals, progressive glasses, or reading glasses because your glasses need to add ADDitional to the distance prescription to see close distances.
Eye Pieces
They have their finger on the pulse of changing fashion trends. Providing a variety of styles and shapes to choose from, and the target is to make everyone happy who is looking for new and attractive glasses. Only the best brands are available to ensure that your glasses are both stylish and durable. From elegant and sophisticated to casual and stylish, you'll find the frame to highlight your look. Designer glasses have lasting value, unique design, and durability. The whole collection has been tested that solid craftsmanship can stand the test of time and wears. They have a large selection of brand-name lenses, including professional lenses. They provide a lot of cool prescription and non-prescription sunglasses.
Driving Glasses - Conant
Conant is a well-known lens brand and a famous trademark in Shanghai. It is a listed company, a high-tech enterprise in Shanghai. It is one of the largest suppliers of Chinese glasses in the world market. And it is an early enterprise in the field of resin lens production in China.
What does vision insurance cover?
Vision insurance and vision benefit plans usually cover the cost of annual eye exams, prescription glasses, and/or contact lenses. Vision insurance includes traditional health/medical policies and health/discount plans that provide vision benefits and cover most. Coverage will vary depending on the type of vision insurance or vision benefit plan you choose. Group vision insurance is usually provided through an employer, an organization, or a government plan like Medicare or Medicaid. If you don't qualify for any of these options, you can purchase a personal vision care plan from a vision insurance provider.
