u003cbru003eTo protect your eyes from UV damage, choose sunglasses
. Everyone knows this. But what you don't know is that you have other options besides regular sunglasses. Let's take a look at the specific situation together. Ray-Ban RB3532 Men's Sunglasses 001/68 Gold One, Sunglasses Sunglasses can block uncomfortable glare, and at the same time can protect the eyes from ultraviolet rays. This is due to metal powder filters, which can 'select' light when it hits the eye. That is, it can selectively absorb some of the wavelengths that make up the sun's rays, that is, when certain wavelengths of light (here refers to ultraviolet a, ultraviolet b, and sometimes infrared) pass through the lens, it faces the eye on the inside Direction, they will cancel each other out, thereby protecting the eyes. 2. Polarized glasses Polarized glasses provide another mechanism to protect the eyes. Polarized light is formed by waves that vibrate in one direction, while ordinary light is formed by waves that vibrate in non-directional directions. Generally speaking, reflected light is an orderly light. Polarizing lenses are particularly effective in blocking this light because of its filtering properties. In fact, the long molecules of the filter layer are oriented in the horizontal direction and can absorb horizontally polarized light. In this way, most of the reflected light is eliminated, and the entire illuminance of the surrounding environment is not reduced. It is a good anti-ultraviolet and anti-glare glasses. Pinxiu 1.61 aspherical anti-ultraviolet gray myopia lens 3. Color-changing glasses The lens of the color-changing glasses can be darkened after the sun's rays come in, and when the lighting is weakened, it will become bright again. This is possible because the silver halide crystals are working. Under normal circumstances, it can keep the lens perfect transparency. Under the sunlight, the silver in the crystal will separate out, and the free silver will form small aggregates inside the lens, and the lens will change color at this time. Color-changing glasses are more convenient and comfortable, and can be used as myopia and sunglasses at the same time. Although the above three kinds of glasses have a good effect on UV protection, improper wearing of sunglasses can easily cause many eye diseases. For example, some people wear sunglasses regardless of the situation, regardless of the intensity of the sun, even at dusk, evening, and when watching movies or TV. This will inevitably increase the burden of eye adjustment, cause eye muscle tension and fatigue, and reduce vision. Blurred vision, dizziness and dizziness may occur in severe cases. In addition, if the sunglasses are worn out and their clarity is affected, they should be replaced in time. Related reading: Sunglasses color-changing spectacle lenses
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