Why is it risky to get glasses online?
The safety and professionalism of online lens matching are widespread concerns of consumers. The whole process of online lens matching is networked, and only a prescription sheet for online lens shopping cannot provide comprehensive and detailed feedback on patients' eye conditions. Therefore, there will be many safety concerns about myopia, high myopia, and astigmatism when they choose to choose glasses online. They have to think about that if the products are qualified, if the quality is good if the style is consistent with the real thing, and so on.
The hinge is not easy to break, rust and impact resistant
Ordinary glasses frames are easy to break and rust, so we always have to replace glasses frequently. Pure titanium spectacle frames are made of 'space metal' aviation materials, and strive to accompany your growth with each pair of pure titanium spectacle frames, witness every moment of your happiness, anger, sorrow, and joy. Let pure titanium spectacles become your personal little guard and the doorman for the window of the soul.
The refractive index of lens
Refraction law is discovered by Dutch mathematician Snell.It is the law that determines the direction of refracted light in the phenomenon of light refraction. When the light from the first medium (refractive index N1) into the second medium (refractive index N2), part of the light from the first medium into the second medium at the smooth interface will be refracted. The index of refraction is the ratio of the speed at which light travels in a vacuum to the speed at which light travels in the medium. For glasses lenses, the higher the refractive index, the thinner the lens, that is, the lens with the same center thickness and the same degree, the lens with the higher refractive index has thinner edges than the lens with the lower refractive index of the same material.
How Long Does It Take to Get Used to New Glasses?
Most people are excited when they get a new pair of glasses for the first time. But sometimes there is an adjustment period before your vision is fully comfortable. So, how long does it take to get used to new glasses?
In most cases, it takes only a few days to adjust to a new pair of glasses. When you are adjusting to your new glasses, you might experience some symptoms such as mild dizziness, blurry vision, or eye strain. This would be a normal situation. These symptoms are common with new glasses and typically last only a few days.
Even though the new glasses come with the same prescription, different frames or lenses can alter your vision until you get used to the new frame style, frame material or lens type.
Besides, other factors will affect the adjustment time, such as the complexity of your prescription, the type of lens, and so on.
How long does it take to adjust to new glasses? It usually takes a few days. However, if you experience eye strain, distorted vision, and especially headaches for a few weeks, you had better contact the eye doctor or the optician. They will check your eyeglass and the prescription.
Are pure titanium myopia rimless glasses good?
Pure titanium frame metal texture is strong, especially for men like business style people, and especially suitable for fashion and capable women. The rimless frames focus on lightness, reducing the wearer's stress and enhancing comfort. Some websites have a variety of pure titanium myopia rimless glasses. They choose high-quality pure titanium material and high-quality lens, and combine them into a pair of high-quality pure titanium myopia rimless glasses, with fine workmanship and fashionable style. Pure titanium unique texture highlights the temperament, so you deserve to have.
Why should children be more vigilant about harmful blue lights?
The amount of light transmitted to the retina through media such as the cornea, lens, and vitreous is age-related. Blue light poses the greatest risk and damage to the eyes during adolescence. As our eyes' refractive media naturally yellows, more blue light is absorbed, preventing it from reaching the retina. The lens transmittance of children under the age of 10 is more than six times higher than that of adults. It is important to prevent the damage of blue light to children's visual health.
How long does it take to get used to progressive lenses?
Because the adjustment of each eye is different, so there will be some differences in the adaptation period. It usually takes about two weeks to get used to it. Probably many young people are familiar with this kind of lens, so they adapt to them for only a week or so and can restore the normal visual effect. If it's been two weeks and you still feel that you can't see clearly, or you have the feeling of nausea, etc., then you need to test and adjust. You need to go to the hospital to see the specific case, to find out whether it is a quality problem of the sunglasses, or there are some artificial reasons. If there is a problem, we should also replace the lenses in time, otherwise, it may lead to the problem of visual fatigue. Therefore, it is still necessary to promptly confirm the case of optometry, and then replace the appropriate glasses.
