Is a nose pad become green harmful?
Pure copper rust contains bacteria that affect the skin and can cause breakouts or skin irritation. High-end glasses are made of alloy materials with lead and nickel not exceeding the standard. Low-end and cheap glasses may not contain environmentally friendly alloy, which will do harm to the human body if it rusts.
Change the lens.
If you like your frames, but your prescription changes or the lenses are damaged, you can simply replace the lenses in the existing frames. Most optical shops will let you choose this method to reduce waste and save money. It is recommended that you take the frame to your local store and talk to the team. They will be able to assess the suitability of your eyeglasses and will be able to give you a quote based on your requirements.
Advantages of progressive multifocal lenses
The progressive multi-focal lens has a number of different focal points from top to bottom. There's a smooth transition between seeing far and seeing close. There is no clear dividing line in the middle, like the myopia glasses, quite beautiful, and it is not dangerous. Because the added value is continuously and slowly increased in the gradient area, the wearer can get a continuous clear vision from the far point to the near point through the progressive lenses with the appropriate head position. In line with physiological optics, They help a better adaptation. Since the lens degree changes little by little, there is no phenomenon like jumping. Because the degree of the lens is gradual, so the vision from far to near changes slowly increase, which will not produce the adjustment of the eye fluctuation. It is not easy to cause visual fatigue. Without a degree line, the appearance will be more beautiful. Clear vision can be obtained at all distances within the visual scope. A pair of glasses satisfies both close and middle distances.
About celluloid glasses
In 1929, the first large-scale production of sunglasses made of celluloid was made by SamFoster, an American who ran a women's accessories company facing bankruptcy and made it convenient to use the injection molding technology used to make hairbrushes. Sunglasses made of celluloid were sold on the beach of Grand West, New Jersey, and became very popular. Indeed, celluloid glasses were once popular because of their high-cost performance, but celluloid gradually faded out of people's eyes due to its poor chemical stability, flammability, and other shortcomings, with the emergence of new materials for glasses.
Silhouette Rimless Glasses
They provide a range of options for rimless, full-frame, and half-frame styles. Their optics lab allows personal prescription lenses to be mounted on any frame and sunglasses. Here, fashion and function come together in an ultra-light titanium eyewear frame, using exclusive hingeless polycarbonate lenses. Minimal weight, hingeless construction, and form combine timeless framing styles with different kinds of lens shapes and breakthrough technologies.
Blue light in electronic products
In addition to the blue light that exists in natural light, LED energy-saving lamps, fluorescent lamps, computer monitors, mobile phones, and other digital products will emit blue light because of the use of light-emitting diode LED technology. Some people think that blue light hurts the eyes because blue light is not absorbed by the cornea and lens like ultraviolet light. The blue light can pass through the refractive medium of the eye to reach the retina, and then be absorbed by the pigment epithelium of the retina, which will cause aging and functional degradation of the retina over time.
The eyes also have many protection mechanisms, such as squinting, pupil contraction, lutein contained in the macula of the retina, and the retina's own antioxidant repair mechanism, which protect our eyes from blue light damage. And after scientific testing, it is found that the blue light emitted by electronic products is only several hundredths of the intensity of blue light in natural light. This means that as long as the electronic products are not used continuously every day (for example, more than 8-10 hours a day), the blue light will not cause obvious damage to the eyes.
Tom Barrett Optical
The progressive eyeglasses meet your fashion desires and your visual needs. They provide unique framing styles and professions to deliver the highest quality eyewear. They understand the needs of customers to bring fashion and functionality to everyone. For more than 35 years, they have provided stylish eyewear with wonderful service and quality. If the concept of eyewear continues to change, the product quality and service will continue to grow and update.
