Who are TR90 glasses for?
Both plate glasses and TR90 frames have their own characteristics and benefits. The plate glasses deduce fashion and are easier to match clothes. It integrates the plate and the texture of the metal, which can better reflect the personality and style. TR90 frames have been widely used in many optical fields like sunglasses, 3D glasses, polarized glasses, radiation-resistant glasses, etc.TR90 frame is so popular in men and women because of its variability. TR90 frame can be perfectly combined with other metals. The neat lines and bright colors bring fresh and energetic outdoor energy to the dull city. The light texture, about half lighter than the plate frame, can reduce the burden on the bridge of the nose, ears, and facial skin, which is very suitable for teenagers who just wear glasses.
The frames should be firm.
What kind of glasses are not easy to damage? It should be said that there are only two types of such frames: full metal frames full non-metal frames. However, be careful when choosing these two frames. Younger children prefer to move, and self-control is poor, so choosing a full non-metal glasses frame is appropriate. Although the middle school children are active, the self-control will be relatively strong, so you can consider the choice of a full metal glasses frame.
Oakley Plank 2.0
Rectangular frames like Oakley sunglasses can help increase the size of round faces, and satin black adds a bold element to the frames. The plastic material makes these frames both light and durable. The wrapped arms are the Oakley brand's signature and help keep the glasses close to the face without pinching.
How Do Varifocal Lenses Work?
Varifocal lenses work by changing power from the top to the bottom of the lens. Moving your eyes up and down, the varifocal lens will give you clear vision at all distances you need. This means if you are using a cash machine, you would be able to view the keys, screen, your card and then continue to walk down the street.
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.
What Is Plastic Lens?
In the above part, we have introduced what polycarbonate lenses are. In this section, we will show you what the plastic lens is.
The plastic lens was first introduced in 1947. Since then, plastic has become a popular and widely used material for making eyeglasses lenses. Since the introduction and use of plastic lenses, it has sealed its mark as the most preferred choice in the optical industry.
Plastic lenses are light. With this feature, plastic lenses are popular because they will not be heavy inside the glasses frame and permit for an easy fit in any type of glasses frame. In addition, plastic glasses are cheap and easy to obtain in desired amounts. So, they are affordable for most people. Plastic lenses are very durable. So, they do not shatter easily on impact which makes it a great choice for individuals who are active or tend to drop their glasses often.
However, compared with other lens materials, plastic lenses are usually thick due to their low index of refraction. The soft feature of plastic glasses makes them susceptible to scratching from a sharp object and why scratch-resistant coating is applied to form an additional protective layer. Plastic lenses do not provide ultraviolet protection.
Choose clear glasses with the right materials for kids.
A critical point for children to choose frames is to think about the weight, to avoid wearing for a long time, or they will be uncomfortable, unstable, easy to slip. It is recommended to choose an ultra-light plate or TR90 lens frame, which has good chemical properties, good thermal stability, with no deformation, good recovery, and no side effects, lightweight, and convenient material.
