Lens anti-fogging agent
To be specific, a layer of the anti-fogging agent is sprayed (coated) on the surface of the lens to form a dense, absorbent, ultra-thin, and ultra-transparent biological coating. The coating chelates the droplets inside the coating (chelating means processing the material into a digestible form) to form a continuous and supper transparent chelating coating, which converts the droplets into a transparent micro-glass layer, thus preventing fogging. Spray anti-fogging agent on the surface of the lens, and then wipe evenly with an ordinary lens cloth. It can be used on most lenses. They are easy to use but have relatively short anti-fogging time. During use, the lens should not be wiped or washed. Long time use will affect the lens life.
What should drivers notice when wearing polarized glasses?
Many drivers like to wear polarized lenses. Indeed, the polarized lens can reduce strong light, eliminate glare, so that the line of sight is natural and soft, but the polarized lens is more suitable for fishing, skiing, and other large areas of the reflective environment. Drivers sometimes have to face the tunnel and another dark scene, the polarized lens is easy to make people suddenly feel dark at the moment. In addition, polarized lenses can make LCD screens and LED traffic lights dim. Therefore, when choosing polarizers, it is best to choose good quality optics, and when going through the tunnel, it is best to take off your glasses ahead of time and blink a lot. Before wearing the driver polarizing lens, try it on and observe whether the polarizing film of the lens is smooth. If the polarizing film is uneven, there will be inflow in the imaging, which may lead to visual fatigue and migraine.
Advantages of progressive multifocal lenses
The progressive multi-focal lens has a number of different focal points from top to bottom. There's a smooth transition between seeing far and seeing close. There is no clear dividing line in the middle, like the myopia glasses, quite beautiful, and it is not dangerous. Because the added value is continuously and slowly increased in the gradient area, the wearer can get a continuous clear vision from the far point to the near point through the progressive lenses with the appropriate head position. In line with physiological optics, They help a better adaptation. Since the lens degree changes little by little, there is no phenomenon like jumping. Because the degree of the lens is gradual, so the vision from far to near changes slowly increase, which will not produce the adjustment of the eye fluctuation. It is not easy to cause visual fatigue. Without a degree line, the appearance will be more beautiful. Clear vision can be obtained at all distances within the visual scope. A pair of glasses satisfies both close and middle distances.
How do you find the right frame at Walmart?
There are different sizes of glasses frames, and the size suitable for each person is not the same. When choosing the glasses frame, you should pay attention to the size. You can compare the size of the glasses frame by querying it, or trying it on directly. There are also many shapes of spectacle frames. Usually, people with heart-shaped faces can choose each type of glasses frame. But for other face shapes, they need to foster strengths and circumflex weaknesses when choosing.
Under normal circumstances, it is recommended that dark skin choose black, tortoiseshell color, and other colors of some dark frames. For those with a yellowish complexion, avoid wearing yellow frames. You can match the glasses that shallow bright color fasten, so the glasses that come out to wear just can appear temperamental outstanding.
Advantages of Metal Frames
The metal frame of eyeglasses conforms to the use performance of the frame. They need the material to have high fracture strength, enough plasticity, toughness, and good elasticity. And after the disappearance of the external force, they can restore to the original shape. This is the regular demand for the high elasticity of the metal frame. They must be able to withstand the atmosphere and human sweat daily corrosion. Usually, the corrosion resistance of pure titanium eyewear will be better than other eyewear. Some glasses will have a variety of wonderful grinding designs, and the material must have high plasticity.
JCPenney Optical is your one-stop-shop for all of your family's eyewear needs. Whether you need an eye exam, sunglasses, contact lenses, or a set of great frames, you'll find frames, prescription lenses, sunglasses, and contact lenses from fashion designers and trusted brands at low prices.
There are many types of bifocals.
According to the manufacturing means, bifocals can be divided into separate bifocals, gluing bifocals, fusion bifocals, E-type bifocals, or one-line bifocals. The separation one is a simple type of bifocal lens. Two lenses of different strength were used to make it be in the center of the distal and proximal vision areas.