一：“What are nearsighted sunglasses”
Myopia sunglasses are glasses that have both the functions of myopia lenses and sunglasses, which can help users block ultraviolet rays when solving myopia related visual problems.
Traditional nearsighted sunglasses are made by adding externally purchased sunglasses clips to ordinary nearsighted glasses, which can be switched by flipping the clips up and down. When the clips are flipped down, they serve the same function as nearsighted sunglasses, and when the clips are removed or flipped up, they serve the same function as nearsighted sunglasses; With the rapid development of eyeglass technology and the emergence of colored lenses, the true meaning of myopia sunglasses has emerged. The new type of myopia sunglasses combines myopia lenses and sunglasses into one, which is both beautiful and lightweight
二：“What are the types of nearsighted sunglasses”
Myopia sunglasses are sunglasses designed for myopic patients. The current eyewear market is very prosperous, and there are many types of myopia sunglasses, including the following:
1. Polarized myopia sunglasses
Polarizers can effectively filter out harmful glare, including temporary blind glare. Like the principle of blinds, horizontal glare is prevented and only vertical light waves with visual information are allowed to enter the eyes, naturally making the scenery look soft and not glaring. Generally, sunglasses only use the function of reducing light, because ordinary lenses cannot filter light, so they can only reduce the intensity of glare, ultraviolet light, etc., and cannot completely block these harmful rays. Therefore, their function is only to reduce eye damage. However, the advantage of large sunglasses is their good popularity. Polarized lenses, due to their polarizing properties, can completely block glare caused by various factors such as scattering, bending, and reflection. At the same time, it can completely block harmful ultraviolet light to the human eye, making it less likely for the eyes to get tired during long-term activities under strong light, achieving true protection, and making what is seen clearer and more three-dimensional.
2. Sunglasses clip, hanging mirror
Sunglasses clip is a relatively old-fashioned nearsighted sunglasses with anti glare and anti UV functions. When walking under the sun, simply flip down the sunglasses clip to cover the nearsighted lenses, providing shade and eye protection. Entering the room, as long as you remove the sunglasses, you become a pair of nearsighted glasses. When selecting clips, choose a style that matches the size of the frame, is scratch resistant, and not easily deformed.
3. Color changing myopia sunglasses
Color changing myopia sunglasses, as the name suggests, are lenses that change their color depth with natural sunlight temperature. The main reason why color changing glasses change color is that they are made of silver halide and silver chloride, which are highly sensitive to light. The lens is transparent indoors and gradually turns gray or brown under outdoor ultraviolet light. When traveling outdoors, it blocks sunlight and ultraviolet light, protects the eyes, and is transparent and clear indoors. It is a practical and cool equipment that is essential for people with myopia. The quality of a color changing film can be judged from three aspects: color changing speed, color changing depth, and color changing uniformity. Fast, deep, and uniform colors are better.
4. Stained nearsighted sunglasses
Dyeing film is a process technology that uses immersion dyeing to immerse resin lenses in hot water containing organic pigments to color and dye the lenses. It can be customized with prescription sunglasses. The depth of color can be controlled at the standard level, and the entire lens can be dyed in a consistent color or gradually changing color. When choosing lens colors, we not only choose beautiful and fashionable colors, but also consider the comfort of wearing the lenses themselves. Attention should be paid when using these glasses. They can be used outdoors, but when entering indoors, you need to switch to regular glasses because the lens has insufficient transparency, which can increase eye fatigue and affect vision.
三:“ What are the advantages and disadvantages of myopia sunglasses”
If myopic patients wear sunglasses, they usually wear specialized myopic sunglasses, which have both advantages and disadvantages:
1. The advantages of myopia sunglasses
(1) Preventing myopia: Myopia sunglasses are a type of sunglasses that correct myopia and can control the progression of myopia after wearing.
(2) Addressing UV Exposure: The biggest advantage of nearsighted sunglasses is that they can effectively reduce UV exposure and alleviate the damage to the eyes caused by UV rays.
(3) Convenient to carry: Myopia sunglasses are very lightweight and easy to carry and wear when going out, allowing patients to see scenery and objects clearly.
2. Disadvantages of nearsighted sunglasses
(1) Expensive: Myopia sunglasses are a combination of myopia glasses and sunglasses, and are more expensive than ordinary sunglasses and myopia glasses.
(2) Uncomfortable to wear: Myopia sunglasses are prescription sunglasses that are thicker and heavier, making them less comfortable to wear than regular sunglasses.
(3) Not suitable for patients with high myopia: Patients with high myopia have poor visual ability, and wearing colored myopia sunglasses will further affect their vision.
