Good Quality Driving Sunglasses

How to protect rimless glasses?

With the continuous improvement of people's living standards, many people begin to pay attention to their quality of life. In the past, many people thought that wearing glasses was for correcting eyesight glasses, but now more and more people use them for decoration, and rimless glasses meet the needs of consumers. Because of its light structure, giving people a sense of fashion, so it is loved by many business people. So how do you protect your rimless glasses?

Why should children wear blue-light-blocking glasses?

Due to the short wavelength of blue light, the focus will fall in the front of the retina. In order to see clearly, the eyeball will be in a state of tension for a long time, causing visual fatigue. Studies have found that exposure to blue light at certain doses can damage epithelial cells on the surface of the eye, causing or aggravating dry eye. Harmful blue light has extremely high energy and can penetrate the lens directly to the retina, leading to the atrophy and death of retinal pigment epithelial cells. The death of light-sensitive cells will lead to vision loss.

The taboos of wearing glasses while driving at night

Night driving members should not wear tawny, green, and gray glasses. Tawny glasses can filter out most of the ultraviolet rays, although can make our eyes feel relaxed but easy to make people sleepy. Green glasses will turn red lights into black, directly affecting our judgment of traffic lights, so there is a great safety risk. Grey glasses, due to their low light transmittance, will weaken our line of sight and affect our observation of the road.

The discoloration principle of photochromic lenses

The fine grains of silver halide and copper oxide were melted into the glass melt of the lens blank material to produce the lens. When the lens is in the ultraviolet environment, the silver halide molecules will undergo a chemical reaction due to the ultraviolet radiation and decompose into silver ion particles and halogens. Because the silver particles are dark and absorb visible light, the lens gets darker. When the ultraviolet light is weakened or isolated, silver ions and halogens are recombined under the action of catalyst copper oxide to form silver halide, so the color of the lens gradually becomes lighter and transparent again. The discoloration mechanism of the resin lens is similar to that of the glass lens.

Does it matter if the frames are broken?

If the frame is broken, there may be inconsistencies between the left and right temples. This will cause the lens optical center shift, long-term wearing will make teenagers feel dizzy and vomiting. Many people will be attributed to the high degrees of this situation. The position of the nose pads is not consistent: this kind of lens deviation from the left to the right causes the prism effect, which makes the wearer can not see clearly, blurred. When the temple is too loose or too tight, it will affect the comfort of wearing the glasses, and the excessive pressure on the temple will cause pain in the head.

How to drive at night with glasses?

If you need to wear glasses while driving, you'll need special glasses when driving at night, because common lenses reflect oncoming lights, which produces a faint glare. This will reduce your visibility. It's OK to wear contact lenses while driving. As you get older, your eyes become more sensitive to glare. Ordinary sunglasses or goggles are only suitable for wearing during the day, driving at night will seriously affect the vision (national standards stipulate that light transmittance of night driving glasses must be greater than75%). Although the all-weather driving glasses can weaken the strong lights, the vision darkens and affects road safety which does not meet the national standards for driving glasses at night. You should choose functional driving glasses that can block strong light, glare and increase the field of vision. This can effectively reduce the glare of the car lights but can filter out the extra harmful light. When worn at night, it can soften the strong lights and make the vision clearer. In this way, the safety of drivers is ensured, the fatigue of eyes is alleviated, and the radiation damage of harmful lights to glasses is prevented.

Polarized vs non-polarized sunglasses

1. Non-polarized sunglasses generally only have the two basic functions of shielding strong light and filtering ultraviolet rays, and their efficiency in filtering ultraviolet rays is low. In our daily life, in addition to strong light and ultraviolet light, when light passes through uneven roads, water surfaces, and other places, irregular diffuse reflection light will be generated, which will cause blurred vision and fatigue in the eyes.

2. Polarized sunglasses can filter out this kind of light, only absorb the reflected light of the object itself, truly present what you see, make the field of vision clearer, and reduce visual fatigue. In addition, polarized sunglasses have a 99% blocking rate of ultraviolet rays due to their high-efficiency filter layer, which can effectively reduce the damage of ultraviolet rays to the eyes.

3. When judging whether the sunglasses are polarized lenses, you can rotate the sunglasses up to 45° clockwise. If the color of the lens changes at this time, and the color of the sunglasses returns to normal after turning the sunglasses back to the original position, then it can be judged that the sunglasses are polarized. And if you can’t see the change in the color of the sunglasses lens no matter how you turn it, then you can judge that the sunglasses are not polarized.