When do you need sunglasses?
The eye skin is more fragile than other parts. Long-time exposure to ultraviolet light will not only stimulate the eye to make it aging but may damage tissues like the cornea, leading to a series of eye diseases.? For more effective eye protection, sunglasses are a better choice.? Dazzling sunshine will make the eyes uncomfortable, affecting the clarity of the objects. Wearing sunglasses will greatly increase comfort.? When the sun is strong, when you go out, take the appropriate way to protect your eyes from the sun.? For example, wearing sunglasses can absorb ultraviolet and infrared rays, reducing sun damage to the eyes.?If you are driving in the direction of the sun, wearing sunglasses can not only protect your eyes from UV radiation but help the driver better observe the situation ahead, which is conducive to safe driving.
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.
What is a progressive lens?
A progressive lens is a lens whose upper sides are used to see far, and the lower side is used to see near. The distance from the fixed distance power above the lens to the near power fixed below the lens does not change suddenly, but a gradual transition between the two through the gradual change in refractive power.
Standard progressive lenses are multifocal lenses with three observation areas, farsightedness, intermediate vision, and nearsightedness. Unlike bifocals, there are no visible lines between each viewing area. They have a seamless, invisible design, where the optical power changes 'gradually' throughout the lens. Many people confuse 'bifocal' or 'trifocal' with 'progressive' but remember that bifocals and trifocals have visible lines in the lens, while progressive lenses do not. Because progressive lenses have no lines in the lens, they are more popular multifocal lenses than bifocal lenses. However, is progressive lens good for eyes?
Shorter lens beam
When you choose a glasses frame for kids, you must pay attention to that the lens beam must be short. The size of the lens beam stipulated by the national standard is 13~22mm. As a child, it should be controlled under 18mm. Otherwise, the position stability of the glasses will be poor.
Finally, they can not casually wear other people's glasses. The strength of each person's glasses, the distance between the optical centers of the two lenses, the length of the temple are different. So they can not casually wear other people's glasses.
Where did the glasses emoji come from?
The glasses emoji was approved as part of Unicode 6.0 under the name Glasses in 2010 and was added to Emoji 1.0 in 2015. Unlike the bespectacled 'nerd face', which is often used to suggest a cool sense of fashion. Just clicking on a few posts with the emoji is enough to make a person want to follow the eyeglasses fashion trend.
What kind of lens is a progressive lens?
Progressive lenses are optical lenses designed for simultaneous correction of far, medium (for computer use), and near (for reading). They are Progressive Additional Lenses (PAL). The so-called progressive, The so-called progressive, is the use of polishing technology to achieve a gradual transition between the two focal lengths. The advantage of this design is that the wearer can see far and near objects alternately without taking off the glasses.
With a wealth of experience, American Eyewear provides wonderful service to its customers.They provide dozens of frames from the world for you to choose from. An optician trained with years of experience can help you choose the right glasses for your face. They make sure your eyes, Bridges, and temples fit perfectly. They provide frames made from hypoallergenic SPX plastic, stainless steel, and ultralight titanium. Rimless glasses are provided. They have their own full eyewear lab facilities to ensure your prescriptions are accurate and prompt. It stores a large number of lenses like single vision, multi-focal lenses, etc.