They can reduce glare.
They can absorb blue atmospheric scattering and provides more contrast. When performance is your top priority, the right lens tone can give you the results you want. UV rays are blocked by a special coating on the lenses. And inferior sunglasses not only cannot hold back ultraviolet rays but let lens permeable luminosity drops seriously, making pupil greens. Ultraviolet rays can shoot in large quantities instead, your eye is damaged.
Metal frames are suitable for wearing.
For the eyeglass frames made of metal or alloy, after rigorous processing and gold plating, the color and luster of the surface reach a certain brightness. And it will be very beautiful to wear. Metal glasses have the benefits of solid, light, and beautiful shapes. The metal frame basically has a nose pad and the nose pad is a movable side that adapts to a variety of nose shapes. The end of the temple is covered with a plastic cover, which is beautiful and protects the skin.
The Advantages of Aspheric Lenses
From the above, you have learned some basic information about aspheric lenses. In this section, we will show you some advantages of the aspherical lens. Apart from the style of aspheric lenses, most people choose them because the following reasons:
- Improved performance
- Spherical aberration correction
- Slimmer and thinner profile
- More frame options
- Improved image quality
- Sleeker profile
- Lightweight and comfortable
- More natural appearance
- Improved peripheral vision
- Multiple lens designs to choose from
So, aspheric lenses come at a lot of advantages. However, everything has two sides. Hence, there are some negative voices of aspherical lens. Therefore, in the following section, we will show you the disadvantages of the aspheric lenses.
How To Use Contact Lens Correctly?
It is not recommended to use contact lenses when they are dry. Because when they are dry, even the nursing vacuole is used, the parameters change. It will affect the comfort of wearing, so it is recommended to replace the new lens. After the nursing liquid is used every time, you should cover the lid tightly. Do not touch the mouth of the bottle with your hand. If expired and unused, it should be discarded and replaced with new nursing fluid. As for your discomfort, you should return to the store for inspection.Contact lenses and glasses should be used interchangeably.
Disadvantages of titanium glasses
Titanium and titanium glasses cost a lot to produce, requirements in buckling, stamping, cutting, and welding are very high, not easy to welding and electroplating.So the price is more expensive, only for high-end glasses frames.
About Prism Glasses
The refractive index of the same medium is different for different colors of light. Different colors of light travel at different speeds in the same medium. Because the same medium has a different refractive index for various monochromatic light, and the deflection angle of each monochromatic light is different when passing through a prism. Therefore, white light through a prism will separate the monochromatic light, known as dispersion. What is the prism effect of glasses? As long as there is a deviation between the visual channel of the eye and the optical center of the lens, it can produce a prism effect. Therefore, the severity of the prism effect can be used to measure whether the glasses with the correct prescription are processed correctly and reshaped correctly.
Why do you need blue-light-blocking glasses?
High-energy blue light would penetrate the lens and directly enter the retina, causing the atrophy and even death of retinal pigment epithelial cells. The death of light-sensitive cells will lead to vision loss or even complete loss, which is irreversible. Blue light at 415 nanometers to 455 nanometers is short, that is, high energy and harmful blue light. This band of blue light would penetrate the lens directly to the center of the macula, causing irreversible damage to the macula. Excessive intake of high-energy blue light would cause confusion of our biological clock, so the damage of blue light should be paid enough attention to.
