Three misunderstandings and three details of buying sunglasses

u003cbru003eSunglasses are an indispensable item in summer. They can block the glare and bring you a hint of coolness in the hot summer. So how do you choose sunglasses? Just remember three misunderstandings and three details, so you can buy sunglasses that you want.   Ray-Ban RB3025 Unisex Sunglasses 002/40 Black/Colorful Blue Film Three Misunderstandings 1. Colored lenses can block ultraviolet rays. Lenses are not colored to block ultraviolet rays. Wearing colored lenses will dilate the pupils. If the lenses cannot adequately block ultraviolet rays, the damage to the eyes will be even greater. 2. Only one pair of sunglasses is enough. In fact, there are three types of sunglasses: general sun-shading mirrors; light-colored sunglasses; and special-purpose (skiing, beach, climbing, etc.) sunglasses. Normal sun-shading glasses are enough in summer; a pair of light-colored sunglasses can be worn in spring and autumn. 3. Children can also wear sunglasses. Some parents are afraid that too much sunlight will stab their children's eyes, so they wear sunglasses. Children’s vision continues to develop with age and requires external light stimulation. Wearing sunglasses will greatly weaken the light stimulation of the child's retina, affect visual development, and lead to amblyopia. Three details 1, with anti-ultraviolet logo. UV protection is the primary function of sunglasses. Some sunglasses have “100% UV protection”, “UV400”, and “UV protection” signs on their lenses or packaging. If you wear low-quality sunglasses that cannot block ultraviolet rays, wearing them for a long time may cause cataracts, such as eye pain, corneal edema, and corneal epithelial shedding. Therefore, consumers should go to a regular optical shop to buy sunglasses. 2. Choose gray, brown and green lenses. The color of the lens should be based on the principle that the color of the surrounding environment is not distorted, the edge of the object is clear, and the signal lights of different colors can be effectively identified. The colors of the lenses are gray, brown, and green because the lenses of these colors absorb infrared and ultraviolet rays better.   Ray-Ban RB3541 Men's Sunglasses 003/30 silver/shallow mercury lens 3. Medium depth lens. Generally speaking, the darker the color of the lens, the stronger the shading effect, but it does not mean that the ability to prevent ultraviolet rays is stronger. The anti-ultraviolet function of sunglasses is also related to the lens material and technology. However, motorists should not choose too dark lenses. Later, I will recommend a related article to everyone: Practical tips for choosing sunglasses in summer, I hope to help everyone~ Related reading: Sunglasses Polarized Sunglasses
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