What is an aspheric lens?
Strictly speaking, any lens with a refractive surface that is not a sphere is an aspheric lens, including ordinary astigmatism lens, progressive multi-focal lens, Aspheric apical lens, etc. But customarily, our daily aspheric lens refers to the Aspheric apical lens. From the center of the lens to the periphery, the radius of curvature increases (the surface of the lens flattens out).
Why are eyeglass frames are so expensive?
The industrial chain has factories, brand owners, regional general agents, retailers. Each link needs to share the risk and profit. They have high operating costs. In addition to the well-known rent, they have the costs of labor, decoration, and so on. There is another important reason. It is the inventory loss because of the style problems. This aspect of the cost must be amortized. From the structure and appearance design of the glasses frame, the development and application of raw materials, processing technology, to manufacturing equipment and procedures, the actual cost may be much higher.
Round Glasses
While round glasses have been popular for the past few years, this season, metallic round frames from the '80s and 90s are getting more attention. These days, round glasses aren't just for Harry Potter fans. People add a sense of weirdness or fashion to their appearance. If you have an angular face and a chiseled chin, then round glasses are for you.
Which Glasses for Computer Are the Best?
There is no such a thing that one type of computer glasses can fit all or is the best for everybody. When selecting glasses for screen protection, the visual ability, personal preferences, the type of work, the distance between the computer user’s eye and the monitor, and other factors should also be considered.
Shape memory alloy
It is made up of nickel, titanium, vanadium, and other metals, and has good elasticity. When faced with external force, the temple can bend more than BETA titanium alloy and can be restored to the original state, so it is named shape memory alloy.
Half titanium frame: Usually, it refers to the titanium combination frame, such as metal frame with pure titanium or β titanium conveniently. It can be reversed, and the former is more common.
How to Get Used to Progressive Lenses?
In this section, we will show you how to get used to progressive lenses.
- Always wear them. If you try and ease your way in by changing them with your previous glasses, it will take a longer time to adjust.
- You need to find and use new areas in your lenses instead of using whatever space is most convenient.
- Make sure you have a comfortable frame that is adjusted for your face.
- Make sure that the optician fits the lens in the right way with the right equipment.
So, if you have difficulty getting used to the progressive lenses, try the above ways.
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.
