Anti-fog lens cloth
Anti-fogging glasses cloth is composed of multiple layers of material pressed together, and the material absorbed a sufficient amount of antifogging agent. It can be directly wiped on any lens. Like spray anti-fogging agents, anti-fogging time is relatively short, and can not be wiped or washed. Long time use will affect the life of the lens. The range of lenses available is limited.
What are the benefits of the TR-90?
Impact resistance is more than 2 times of nylon material, in order to effectively prevent the damage to the eyes caused by impact in the movement. It has high-temperature resistance. It's very elastic, and it doesn't deform.The use of thermoplastic materials in these frames provides pretty strength due to their flexible characteristics. It is not easy to deform and change color, making it wear for a longer time. Having no release of chemical residues, it is in line with the European requirements for food-grade materials. The weight is less than half of the weight of the plate frame, 85% of nylon material, reducing the burden of nose bridge, ears, and making wearing more comfortable.
What does the glasses emoji mean?
The glasses emoji is a special type of symbol that can be used on smartphones, tablets, and computers. The glasses emoji is an illustration of glasses, used by people with poor vision or those who believe that wearing glasses makes them look smarter, purely as a style element. Different devices may have different versions of the glasses emoji. The glasses emoji, which varies slightly across platforms, depicts a pair of glasses with a gray or black border. Most are square or slightly round. The glasses emoji is used to talk about the fashion of wearing eyeglasses.
Types of Varifocal Lenses
As is well known, there are several types of varifocal lenses. So, in this section, we will list some the types of varifocal lenses.
Standard varifocal lens: standard varifocal lenses are the entry-level varifocal options and are chosen as an enhanced alternative to bifocals. They have clear and fairly wide focal areas for distance, reading, and in between.
Premium varifocal lens: premium varifocal lenses are also called free form varifocals or back surfaced digital varifocal lenses. It offers much clearer vision at all points and is a significant step up from a standard varifocal lens in terms of vision, clarity, focus, and ease of adapting to them. They are created using the latest computer-driven equipment and have a wider field of vision at the distance, intermediate/in-between, and reading focal points.
Size of the glasses frame
Children's glasses should have enough field of vision. Because children have different kinds of activities, try not to choose frames that will produce shadows and blind corners. If the frame is too small, the field of view will be smaller. If the frame is too big, it will be easy to wear instability, and weight will increase. So the frames for children should be moderate in size.
Which are better, elastic or inelastic frames?
The more elastic the frame, the better, because only good elasticity can be naturally worn on the face, not sliding. It is comfortable. On the contrary, when you wear it, the temples are open. Because without elasticity, they can't go back to their original state. When you put it on, it creates a feeling of slipping and sagging. We often see that some people repeatedly with hand glasses. This is this problem. In order to pursue good elasticity, high elastic materials such as titanium and stainless steel are widely used in the production of spectacle frames.
Transition Lenses Problems
Here, we will show you some common transition lenses problems.
Transition lenses are typically embedded with photo-sensitive chemicals or coated with similar films that produce the shading effect when exposed to light. This process makes the lens more expensive to manufacture and focuses on prescription glasses, thus raising the transition glasses cost. The transition lenses cost may be twice of the regular glasses lenses.
When you are driving with the transition glasses, they will fail to work. Car windshields typically come standard with anti-glare effects or films and laminates that break up some of the direct sunlight that enters the vehicle. This will reduce the transition lens effects, causing them to register a non-lit condition when the direct sunlight can actually be very bright.