Testing of aspheric lens
The optical axis of the optical center just overlaps with the visual axis of the eye, which is the most ideal state. Because the light from the edge cannot form a focus on the optical axis, when the optical axis does not overlap with the visual axis (the difference is greater than 2mm), such unclear and scattered imaging results will occur. When choosing frames and aspheric lenses, you need to ensure that they fit correctly, to achieve the best visual and decorative effects. Simply put, due to the special design of the lens, we found through a calculation that the optical center should move down 1mm higher than the pupil for every 2° increase in front inclination angle. Otherwise, the wrong pupil height will cause the lens to look like astigmatism, and cause discomfort. For glasses with aspheric lenses, there must be an inclination angle after wearing. The specific angle varies from person to person.
Silhouette Dynamics Colorwave 5500 BJ 6660
The Contoured Dynamic Colorwave 5500 BJ glasses come with a solid metal frame. Prescription lenses for SmartBuyGlasses are a great option so that your glasses are ready to wear. The lenses are coated with a special premium coating that makes them anti-glare and scratch-resistant. The contour dynamic color wave 5500 BJ glasses feature a gray frame and standard lens. The simplicity of rimless glasses is not that easy to create. Innovation plays a role in every rimless style. A focus on craftsmanship excellence and self-imposed high standards are part of this enduring manufacturer's legacy.
How To Choose Better Night Driving Glasses?
Driving at night has a high accident rate because of poor visibility, blinding headlights, and fatigue. Now the market exists a few main glasses: sunglasses polarizing lenses, Glasses that use or mimic the first generation of patented technology. So how do you compare the options between driving and wearing glasses?
Night driving lens is relatively special compared with daily driving lens, not only to prevent strong light and see the road more clearly. According to the national motor vehicle driver special glasses standards, QBT 2659-2004 daily light transmittance should be more than 8%, night light transmittance should be more than 75%. Be sure to consult customer service. Ask about the situation. Note that a pair of polarized sunglasses are not suitable for use at night, and the light transmittance must reach the national safety standards.
The Pros and Cons of Shopping Glasses Online
Brick-and-mortar stores rely on a few or a dozen a day to make a profit, so the unit price is higher. Online stores have low costs. The profit can be made by volume, so the unit price is much lower. This is the advantage of online stores. The disadvantage of online stores is that it takes a lot of effort to get an optometrist, but optometrists have varying levels and attitudes. As a result, the prescriptions we get may not be entirely accurate. This can lead to uncomfortable glasses. The physical store glasses can try on. Choosing online glasses is not convenient.
Are Horn Rimmed Glasses Suitable for You?
Since the horn rimmed glasses are fashionable, some of you may ask whether horn rimmed glasses or horn rimmed sunglasses are suitable for you. It may depend on several factors such as style, preference, profession and responsibility. Horn rimmed glasses can bring a sense of fashion sense for you.
In addition, horn rimmed glasses will never go out of style. If you like them, have a try.
How do myopic glasses work?
The formation principle of myopia is that when the light from the outside world enters the eyeball, it is refracted by the eyeball's refractive system and cannot be accurately imprinted on the retina. The image is in front of the retina. If a concave lens is placed in front of the eye before the light enters the eye, it shifts the focus of the myopic eye from a point in front of the retina to the back, so that it lands directly on the surface of the retina. When parallel light passes through a concave lens, it diverges, meaning that it has already diverged once before entering the eye and then is refracted normally by the eye's refractive system. When the light is refracted through the eyeball, the distance of the image will be longer. So the distance of the image will be correspondingly pushed back compared to the non-divergent light. But it will just fall on the retina, and the image will be accurate in the right place.
The warranty service
It starts public services. The repair lab has repaired more than 90 percent of glasses with broken frames.They provide all types of repairs, like plastic repair, metal repair, and lens replacement, no matter what the work is done. They still provide you a 60-day warranty for eyewear repair. The repaired area is ensured to protect you if damage occurs.