Three misunderstandings about sunglasses cognition

u003cbru003eYou need to be very careful when choosing and wearing sunglasses, otherwise it will not only fail to protect your eyes, but may also damage your eyesight. Many people who buy sunglasses pay attention to the style of the glasses. Whenever they pick up a pair of sunglasses, they will look at the style in front of the mirror. As long as they match their face shape or are more fashionable, they will buy it, and no longer care about other information about the sunglasses. What is more worrying is that some people casually bought a pair of sunglasses at a roadside stall in order to be cheap, or just to block the sun. YC9709 Ms. Sunglasses C4 Tortoiseshell/Lens Gray Misunderstanding 1: It can block the sun to protect the eyes of people's pupils from shrinking under strong light, and use the human eye's own adjustment function to resist ultraviolet rays and other harmful rays. In contrast, a person’s pupils will dilate in a dark environment. When wearing low-quality sunglasses that cannot protect against ultraviolet rays, the residual ultraviolet rays will be injected into the eyes in large quantities, so it is better not to wear them. If you use such sunglasses that are not UV-resistant, you may burn your eyes. If the burn is deep, the damaged sensory cells on the retina will not even be able to recover. YC9708 General Sunglasses C7 Black Frame Silver Legs/Lens Gray Misunderstanding 2: Dark-colored lenses can better block ultraviolet rays Sunglasses can block ultraviolet rays because of a special coating on the lenses. After the lens is coated, while blocking and absorbing ultraviolet rays, it also blocks part of the useful light, which reduces the transmittance of the lens. There is no direct relationship between the ability of sunglasses to block ultraviolet rays and the color depth of the mirror. Really good-quality sunglasses have strong ability to block ultraviolet rays, and the transmittance is not much lower, which does not affect the general visual clarity. Misunderstanding 3: Children wear sunglasses to prevent sunlight. Children’s pupils are more sensitive to strong light stimulation. Under strong light, it can reduce the light entering the fundus. Children’s eyes are very adaptable. Even with some low-quality sunglasses, children can adapt quickly without feeling uncomfortable. Therefore, in general, try not to wear sunglasses for children for decoration, let alone wear them for a long time. Related reading: Sunglasses Polarized Sunglasses Brand

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