Do kids need blue light blocking glasses?
1. American Ophthalmological Association
The American Ophthalmological Association clearly stated that it does not recommend any special glasses. The organization stated that there is no evidence that blue light from electronic devices can cause damage to the eyes. The discomfort that many people experience after watching electronic screens for a long time is due to symptoms such as dry eyes and even blurred vision caused by digital visual fatigue. The symptoms of using electronic products are related to how we use digital devices, not the blue light emitted from digital devices. There is currently no clinical evidence that blue light causes damage to the eyes, and measures to prevent blue light may be more harmful than blue light itself. It is too early to take preventive measures against blue light and may have unintended consequences.
2. British Association of Optometrists
The association believes that there is a lack of high-quality evidence to support the use of blue shaded glasses to improve people's visual performance, sleep quality, relieve eye fatigue, or protect macular health. There is no research on the effect of anti-blue eyeglass lenses on the health of the macula.
3. Chinese Journal of Ophthalmology
If the blue light is excessive, that is, the human eye is exposed to high-frequency and high-energy blue light, it will damage the rod cells. However, the rich blue environment with intensive exposure and the normalized environment are two different concepts. Therefore, it is unscientific to equate blue light with retinal damage. Individualized blue light protection guidance and recommendations should be put forward under different conditions such as different ages, health conditions, and working environments.
What Should Be Considered When Buying Blue Light Glasses?
Be wary of “eye protection” claims. Some businesses advocate their anti-blue light products how miraculous.
Do not try the lens from the unknown lens manufacturer or lens factory. A professional lens factory needs more than ten years or even decades of accumulation, so do not be blinded by dazzling pictures and brand image.
Disadvantages of Progressive Lenses
It takes time to adapt to the lenses. It can generate poor visual resolution (blur). There is also a geometric distortion of the field of view. Some of the problems with advanced progressive lenses occur when walking up and downstairs. Because the reading correction is at the bottom, the staircase may look like a rebound. However, this is all done to accommodate your progressive lenses, and within about two weeks the shortcomings should disappear. It takes some time to get used to progressive lenses. Changes in vision occur at the rim of the lens, leading to slight changes in peripheral vision. For some people, change is a little difficult. Because the first wear of progressive lenses may occur slight dizziness, shaky walking. One should be careful when they exercise or go Up and down the stairs. Because the sense of space changes, the distance judgment of the object, the sense of depth changes, people who first wear should not immediately drive or do strenuous exercise. When looking closely, the eyes need to turn down, they have mild discomfort in the eyes. The object becomes blurry when they look at it through a blurred area around the lens. Therefore, new wearers turn their heads more and turn their eyes less when they see things and try to use the far, near, and middle distance areas to see the object.
What is the cheapest way to buy prescription glasses?
After the examination, you will bring your optometry sheet and go to the optician to match your glasses. Note that the optical shop has professional qualifications. The refractive index of the resin lens, such as 1.49, 1.56, 1.61, 1.67, and so on, mainly depends on the degree. If the degree is not high, 1.56 will do. In addition, the sophisticated store will also measure the nose height, nose width, the distance between the eyes and ears, and the forward angle of the frame, which are also indicators of whether the glasses are comfortable to wear. It is recommended to try them on after they are fitted, and the time to try on them should be longer, so as to determine whether the glasses are suitable.
Can you look at your phone while wearing polarized sunglasses?
That's because polarized lenses filter the light from some phones, leaving only black stripes visible.Polarized sunglasses have polarized lenses, and cell phone screens have polarized patches in their components. The polarized film has the function of shielding and passing through the incident light, which can make the longitudinal light or transverse light one kind of passing through, one kind of obscured. Because different phones have different polaroid settings, there will be different shades at different viewing angles. Thanks to a combination of polarizing lenses and lenses, both of which filter the direction of light, the screen can't be seen when the shielding and penetrating parts overlap.
Benefits of Blue Light Glasses
In this section, we will show you the benefits of blue light glasses.
- Relieve eye discomfort with blue-light blocking glasses. Excess device usage can lead to computer vision syndrome or digital eye strain. Blue light glasses can enhance your focus and reduce eye strain, resulting in making your eyes feel less tired and improving productivity. Another way to reduce eye strain is to make sure you take regular breaks from the screen.
- Blue light glasses can affect your sleep. Blue light has a high energy frequency that can increase alertness and delay the body’s release of melatonin, which helps induce sleep. In general, you had better not use blue light devices one to two hours before sleep. Blue light glasses can reduce the impact of blue light, enabling you to use your devices before bed and still get a good sleep.
- Blue light glass can help reduce the likelihood of Age-Related Macular Degeneration. AMD is a leading cause of blindness. Blue light blocking lenses can help avoid or delay this condition by preventing blue light from impacting your eyes.
Of course, besides those benefits, there are some other benefits of blue light glasses. For example, blue light glasses can relieve headaches.
Myopia Glasses
Glasses are lenses used to correct vision or protect eyes. It is not only an eye protection product but also a cosmetic decoration. Nowadays, there are more and more varieties of glasses, and the classification is getting more and more detailed. In addition to myopia glasses, reading glasses, and sunglasses, it also includes driver protective glasses, computer protective glasses, leisure goggles, and sports goggles, which are suitable for special industries, special work, and leisure and entertainment. Moreover, the progress of the times promotes the maturity of people's consumer psychology. Consumers pay more attention to the diversification and individualization of products. The demand for glasses has risen from a single level of vision care to three-dimensional consumption spaces such as humanities and aesthetics. This will stimulate the research, development, and sales of new varieties and new styles of glasses, and bring new opportunities for the development of the glasses retail industry.
Myopia glasses mainly include frame glasses and contact lenses. With the increasing demand for glasses by people who love beauty, myopia glasses have begun to combine the beautiful nature of sunglasses, and many new products have come out. The addition of contact lenses can be regarded as a supplement in terms of myopia glasses. The popularity of contact lenses has a sufficient reason that it eliminates the trouble of frame glasses, does not affect the appearance, and the feeling of seeing objects is more three-dimensional.
