How to Identify Pure Titanium Spectacle Frames? Titanium is widely used in the glasses industry because it is not easy to deform, fade and has strong stability. The spectacle frame made of titanium c ...
The stress meter detects the birefringence of transparent and weakly coloured materials and calculates the value of the birefringence with a precise optical range error of up to 10 nm by the Senarmont ...
Myopia, astigmatism and other problems are very common in today's society, especially in primary and secondary schools, such a phenomenon is becoming more and more serious. Many people regret it only ...
1. Don't take off and wear the glasses frequently. This will cause frequent movement of the retina to the lens, which will easily cause the power to rise. 2. If you put the glasses on the table, do n ...
Risks associated with too much screen time Children who spend multiple hours staring at digital devices are at risk of developing these vision-related problems: Computer vision syndrome Too much un ...
Now a lot of people are working beside the computer, the radiation of the computer to the human body is very big, so often in front of the computer vision will decline, the eyes will not see clearly. ...
Dear Customers, Perhaps you have noticed that the recent "dual control of energy consumption" policy of the Chinese government, which has a certain impact on the production capacity of some manufac ...
The eye protector can accelerate blood circulation and alleviate eye fatigue by means of neodymium magnetic finger or air bag pressure on the eyes. The unique massage function of the eye care instrume ...
The following will introduce the common materials of glasses frames, as well as the advantages and disadvantages of each material. (1) TR90 material The glasses frame, the veteran level, is also the ...
- Frame glasses are placed in front of the eyes, while contact lenses are directly attached to the front of the cornea. There is no apex distance effect of frame glasses. At the same time, according t ...
What is myopia? Myopia (also called nearsightedness) is the most common cause of impaired vision in people under age 40. In recent years, its prevalence is growing at an alarming rate. Globally, rese ...
The main function of protective glasses is to ensure that operators are prevented from or reduced eye injuries caused by accidents during the production process. So, what is the correct way to wear p ...
Don’t buy too cheap reading glasses for your parents. Don’t think that the cheaper the better. Cheap products are only available in the wholesale market. Such glasses have not undergone formal optomet ...
1. Observe whether the welding part of the frame is firm, 2. Is the plating on the surface of the frame smooth? 3. Whether there are defects on the surface of the frame 4. Whether the shape of the ...
Progressive myopia is nearsightedness that worsens year after year. If myopia progresses enough, it can result in high myopia, a severe degree of nearsightedness that increases the risk of developing ...
Many people start to lose their eyesight around the age of fifty. In order to facilitate reading, watching TV, and work, they will go to an optical shop to have a pair of reading glasses. Recently, re ...
Like our lotion, the first is nano-level hyaluronic acid micromolecules, which can penetrate through the surface of the lens to the inner layer of the lens material, making the lens full of moisture. ...
Mention astigmatism, I believe many friends will not feel strange. Actually, the astigmatism that has more than 9 adult eyes to exist different degree, among them there is about 10-20% astigmatism de ...
- Features of good sports glasses 1. The color of the left and right lenses is uniform and the difference is not more than 5%; 2. 100% resistance to ultraviolet rays; no deformation when viewing obj ...
Tips of Contact Lens Ⅱ Knowledge of daily care of contact lenses 1. The correct way to remove and wear Usually people will directly pinch with both fingers a pinch, but actually this is wrong! The ...
How eye color is determined Most of us were taught in high school science class that we inherit our eye color from our parents, and that brown eye color is dominant and blue is recessive. That would ...
Titanium glasses Advantages: Lightweight and comfortable, its material is light among glasses, with good hardness, the frame is not easy to be deformed, corrosion-resistant, rust-free, does not caus ...
Tips of Contact Lens Contact lens replacement methods and materials Annual disposable ≠ good quality Annual disposable = worst Traditional annual contact lenses are made of HEMA, which is the oldest ...
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