What are the functions of anti-blue glasses?
The myopia of young people is getting worse every year, and the main factor that causes myopia in young people is the high-energy blue light of mobile phones and computers. Children’s lenses are clearer and more transparent than adults and have a weaker effect of blocking and filtering the blue light of electronic products. The blue light transmittance of their lenses is several times higher than that of adults so there is more blue light penetrates the lens to reach the retina. Therefore, the damage caused by blue light to children's eyes is much more serious than that of adults. Naturally, be careful with blue light. When the child is facing the screen of the mobile phone and computer, wearing anti-blue glasses can more or less reduce the blue light and reduce the blue light energy. The blue light energy that enters the retina is not so much so strong, and naturally, it will not damage the pigment epithelial cells and photoreceptor cells on the retina, thus protecting the child's eyes.
The main function of anti-blue glasses is to relieve eye fatigue, reduce retinal damage, prevent myopia from deepening, and reduce the incidence of special eye diseases such as macular degeneration and cataracts. According to your own situation, if you are really looking at the phone and computer screen for a long time, wearing anti-blue glasses is better. Usually, pay more attention to the habit of using your eyes, rest your eyes appropriately, and play less with mobile phones and computers.
How to Get Used to Progressive Lenses?
It is common that your vision may change when you are over age 40. You can find it is happening when have to hold your favorite book, the daily newspaper, or a restaurant menu farther away just to read it. This is an eye condition called presbyopia. It is normal and almost all of us get it as we reach middle age.
This eye condition often can be corrected by progressive lenses which allow you to see objects from far to near clearly. With progressive lenses, you do not have to switch your glasses to see far or near objects frequently.
However, since progressive glasses have three different prescriptions in one lens, it may be difficult for some people to adapt to the new ones. So, in this post, we will show you how to get used to progressive lenses.
Driver's protective glasses
The principle of the driver's protective glasses is to use the special film on the glasses to reflect the strong light hitting the glasses back to protect the eyes. It can protect against ultraviolet, infrared and blue light on foggy and rainy days. In snowy weather and at night, the wearer can see the scenery more clearly, and it can also increase the vividness of red, yellow, green, white, and other colors, and eliminate the glare and reflected light of the oncoming cars when meeting cars at night.
How to choose frames?
Of course, the best way is to try it on many times. The visual effect is more direct and reliable than trying on. Spend more time and you can find your own style suitable for you.
In addition, where comfort and aesthetics permit, choose the size as large as possible so that the view will be larger. However, there are some optometric parameters that limit the selection of frames. For example, if the pupil distance is very small, choose a size that is too large is not suitable. Try not to choose the product with spray paint on the surface, because durable time is shorter.
You should pay special attention to that TR, plastic steel, stainless steel, wood, β titanium glasses temple may not be adjusted. When trying on, it should be noted that the weight of the lens has not been added to the trying frame, to avoid the problem of discomfort (such as an easy slip of the frame) found after the preparation.
What Are Progressive Lenses?
Traditional eyeglasses are usually single vision lenses with one prescription. Progressive lenses are multiple with three prescriptions in a pair of eyeglasses. Progressive lenses let you see comfortably at different distances, allowing you to see close, near, and far without changing your glasses. There are other kinds of multifocal lenses like bifocals and trifocals, but progressive lenses differ because of their smooth transition between prescriptions.
Bifocals and trifocals work similarly to progressive lenses and feature either two or three prescriptions in a pair of glasses. These lenses have definitive lines separating the prescriptions. However, progressive lenses don’t use these lines and allow you to easily transition between prescriptions.
Hence, in the following section, we will show you 6 different types of progressive lenses.
Can clear lenses be polarized?
At present, there are no clear polarized lenses. A polarized lens is a thin film vertically arranged with silicon crystal coating placed inside the lens, just like a shutter, which covers the parallel light and only allows the vertical light to pass through. In this way, the glare from all directions can be eliminated, so it is clear and comfortable to wear. Transparent polyamide, the material of nylon lens, is a new variety of polyamide. The material of the nylon lens is mainly transparent polyamide. Due to the effect of the light filter, only light from a specific direction is allowed to pass through the lens, which filters the dazzling light from the sun on the water, land, or snow very well. It can not only make the landscape soft, clear, and natural but protect the eyes to a certain extent.
Cheap reading glasses can cause eye strain.
The optical quality of cheap reading glasses is often not as good as that of custom glasses for computer use and reading. Moreover, cheap reading glasses often offer no protection against the high-energy blue light emitted from computer screens and other digital devices.
