Progressive Lens
Standard progressive lenses are multifocal lenses with three observation areas, farsightedness, intermediate vision, and nearsightedness. Unlike bifocals, there are no visible lines between each viewing area. They have a seamless, invisible design, where the optical power changes 'gradually' throughout the lens. Many people confuse 'bifocal' or 'trifocal' with 'progressive' but remember that bifocals and trifocals have visible lines in the lens, while progressive lenses do not. Because progressive lenses have no lines in the lens, they are more popular multifocal lenses than bifocal lenses.
The main observation area of the progressive lens is a far distance, the smaller area at the bottom of the lens is used for myopia, and the middle area in the middle is smaller. Standard progressive glasses are very suitable for general purpose glasses, focusing on hyperopia activities (such as driving and walking) and sufficient area in the lenses for nearsighted activities (such as reading and computer use). The left and right sides or 'convex corners' of the lens are deliberately blurred to achieve an invisible design. The clearest line of sight in the gradual process is from the center to the top of the lens.
Oval face with glasses of various shapes
The oval face is the most perfect face shape. Whether it is size, shape, or contour, it is a more perfect face shape There are many types to choose from, and there are basically no minefields. But be sure to pay attention to the size of the glasses. Sometimes the size of the glasses is also very important. if you are not careful, it will highlight the incompatibility of your facial features. So make sure your glasses are not too big or too small. You should judge the size according to their face shape.
How to Combat the Photophobia?
Photophobia can’t be completely prevented, but it can be managed. So, you can try the following suggestions.
- Wear photophobia glasses, computer glasses, or glasses for light sensitivity.
- Choose natural lighting for indoor settings when possible.
- Consider vision therapy.
- Wear blue light blocking glasses.
- Seek medical attention if symptoms worsen.
So, from the above information, you can find that you can wear photophobia glasses to relieve the photophobia. What are the benefits of photophobia glasses.
Pure titanium has special current characteristics
Pure titanium can guide electron fluctuations to produce ions, causing the current to tend to ionize. The positive and negative ions can adjust the adverse effects of electromagnetic waves caused by the body's biological current disorder and have a great health care effect on the human body in order to avoid fatigue, muscle stiffness, soreness, and other symptoms or problems.
What are NXT Lenses?
NXT lenses are made of Trivex materials. Trivex (Chinese name: Ethyl Carbamate Polymer) was invented by PPG in 2001.
Impact resistance:
Impact resistance is the main feature of the NXT lens. As a visual armor material originally used in the military field, Trivex has effective impact protection to the eye when it is most demanded. It is 10 times stronger than PC lenses in impact resistance and will last for life under normal use. It is the only explosion-proof safety lens on the market that can withstand external forces and turns.
Patented color injection technology :
Color representation is another important feature of NXT lenses. The biggest defect of the regular lens in dyeing is color aberration. The same color of the lens with different luminosity will produce different effects. The higher the refractive index, the serious the error. NXT lenses are a breakthrough in this respect. The patented color injection technology that infuses the color into the raw material gives the lens a natural color, ensuring that color aberrations are minimized and that they do not fade or change color over time or over long periods of use like other materials.
Abbe number and internal stress:
The Abbe number of NXT lenses made of Trivex is 43~45, which is close to CR39(58) and higher than PC lenses (29~32) and high folding lenses (32~41). At the same time, because the NXT lens is produced by the casting process, there is no stress in the finished lens, which further reduces the rainbow phenomenon, providing a guarantee for the clear visual effect and reducing eye fatigue.
Weight:
The specific gravity of NXT lens is 1.11g/cm3, 16% lighter than CR39 (1.32g/cm3) and 10% lighter than PC tablet (1.22g/cm3). The Trivex 1.53NXT medium-fold lens is so light that it can float.
Identify the frames of discount glasses
Electroplating spraying refers to metal frames, all need to be plated on color. Spraying, the quality of this process, determines the quality of the frame. Glasses are not high-tech, but details like hinges -- the joints that open and close -- make a big difference between good and bad. The little screws inside, about four of them (hinges and nose pad), are important.Silk screen printing or laser engraving refers to the above logo or data, some of the silk screen, easy to sweat and fade, does not affect the use. Some laser engraving, basic will not fade, so, look at these details, can probably judge the stand or fall of the frame.
Are polarized glasses good for fishing?
Fishing goggles are polarized lenses. Fishing goggles are a type of goggles that can remove scales on the surface of the water so that the fisherman can see the fish taking the bait. Polarized sunglasses increase color saturation and prevent eye strain. Wear gray glasses on sunny days when fishing. They can fully absorb infrared rays, as well as most ultraviolet rays, without changing the original color of the scene. Warm, natural colors are a popular lens choice. Wear green glasses on cloudy days when fishing. like gray glasses, they can absorb all the lone infrared rays and 99% of the ultraviolet rays, but sometimes the color of the scene after passing through the green lens will be changed. But because green brings a cool and refreshing feeling, it is also good for eye protection.
