Color weakness is mainly due to poor color discrimination function, which is lighter than color blindness. It is also divided into weak red and weak green. Color weak people, although they can see the ...
Plastic material knowledage Hello everyone, Our eyeglasses are consist of plastic frames and metal frames Do you know what plastic material is ? Plastic divide into Acetate, Ultem, TR90, CP, PC T ...
1. Full Frame: It is a commonly used type of frame, characterized by solid, easy to shape, can hide part of the thickness of the lens. 2. Nylon Wire Frame: A very thin nylon wire for part of the fram ...
A pair of glasses with a blue light filter can resist the harmful purple and blue light effects produced by the digital screen, effectively acting as a sunscreen. Whether you wear prescription glasse ...
Many people disagree about whether wearing glasses for a long time will deform their eyes. Today, let's discuss this topic.In recent decades, there have been more and more electronic products with mor ...
The difference between swimming goggles and diving goggles, and the structure, principle, application scope and method of swimming goggles and diving goggles are different. 1. The diving goggle has a ...
What should we do if the glasses are dirty? Most people choose to use glasses cloth or napkins to wipe directly. In fact, this will damage our lenses more or less, and if they encounter oil stains o ...
You probably know that too much exposure to the sun's ultraviolet (UV) rays can cause sunburn and skin cancer. But did you know UV also can harm your eyes? Extended exposure to the sun's UV rays has ...
This Month Is September ,this month we have big Promotion and our all products are promotion,if you order over $88 we will give you $5 discount.if you order over $188 we will give you $10 discount.if ...
This is our company's biggest promotional month, with many strong activities. 1.All products (glasses, contact lenses, cases, etc.) are the lowest prices in a year. 2.Shipping is also the lowest pri ...
1、 Development history of progressive multifocal lens Owen aves first proposed the concept of progressive multifocal lens in 1907, marking the birth of a new concept of vision correction. The design ...
Hello everyone, Today I share our new function product. It is clip on magnetic frames. Usually near-sighted person do not easily wear sunglasses. But they wear prescription sunglasses and cost is ...
First of all, you should know that it’s enough that the refractive index of the lens is suitable, not the higher the better. The 1.56, 1.61, 1.67, 1.71, and 1.74 on the lens are the refractive index ...
1. Permanently hurt the eyes Wearing sunglasses, the light becomes darker, so people’s pupils will increase, but because your sunglasses can’t block ultraviolet rays, it means that a large amount of ...
In a world where screens seem to be ever present, it’s important to take steps to protect your vision, even with something as simple as using your phone’s dark mode setting. But is dark mode better fo ...
Projection materials are divided into three categories: optical glass, optical crystal and optical plastic. Their optical characteristics are mainly determined by their transmittance and refractive in ...
Material: Made of high-tech plastic memory board. Composition: Most of the current sheet materials are acetate fiber, and a few high-end frames are propionate fiber. The acetate sheet is divided into ...
Get myopia to eat less high-sugar food, sugar is too much, will make the blood to produce a certain amount of acid, acid and salt in the body, especially with calcium phase and reduction in the blood ...
1. When buying contact lenses, you must pay attention to whether the brand has the registration certificate, production license and other relevant documents issued by the State Food and Drug Administr ...
For myopic friends, glasses are a burden when doing sports, so do people need to wear myopic glasses when doing sports? Many people have different answers to this question. Some people say that you m ...
1.What is the difference between night vision glasses and polarizing glasses 1. Different principles Polarizer is made according to the polarization principle of light, which disperses unwanted ligh ...
Misunderstanding 4: The more the myopia glasses are changed, the higher the degree In addition to genetics, excessive use of eyes and unscientific use of eyes. The degree of myopia in the development ...
5 signs your glasses don’t fit You’ve found what appears to be the perfect set of eyeglass frames to match your unique style, but the fit falls flat. The size and shape of your eyewear does matter ...
In recent years, with the gradual increase of adolescents’myopia, children’s glasses have also been paid more and more attention. So how to choose a frame for children? First of all, color and "good-l ...
Whatsapp
