How Do Progressive Lenses Work?
So, how do progressive glasses work? Progressive lenses allow you to see at all distances with one pair of glasses. They start with your distance prescriptions at the top of the lens and increase as you move toward the bottom of the lens. You can move your head position to allow you to focus through different areas of the lens.
Move your head upwards to see something in the distance, and hold it straight for intermediate or arm’s length vision and down for near vision for objects that are close up. Apart from the aesthetic improvement of the lens without the line segments, progressive lenses avoid the visual discontinuity or image-jump when your eyes shift from one zone to the other in non-progressive multifocals.
Transparent frames: as for glasses for round faces, the transparent frames aren’t going away anytime soon. Whether clear or with a faint tint, these frames are almost invisible from a distance and make it easy to clearly see the soft features of a round face. So, if you need a pair of glasses for a round face, try the transparent or clear frames.
Full-rim glasses: round faces look best against strong angular lines, while full-rim glasses can enclose and balance these features. So, you can take the full-rim glasses into consideration when choosing round-face glasses.
Basic principles of progressive lenses
The surface of the progressive slice is divided into five regions. There are far, middle, and near optical areas. They are respectively corresponding to see distant objects, middle distance objects in the near distance objects. One pair of glasses is multi-purpose. In appearance, it is not very different from regular lenses. There is no clear dividing line. Distal use area: The area above the progressive slice is the distal use area, which is used to correct the distal refractive error. Proximity area: from the matching lens cross down, the refractive power of the lens continuously increases the positive degree, which is used to see close objects. Gradient area: The channel connecting the far and near areas. It is an area of regular change from top to bottom, used for transitioning and seeing objects at intermediate distances. The length of the gradient is very important for the wearer's adaptation. The rate at which the degree of gradient changes is called gradient. The gradient can be uniform or variable. Peripheral area: Changes in the surface curvature of the lens will lead to aberrations in the peripheral areas on both sides of the lens, mainly astigmatism and prism effect, which will interfere with a vision to a certain extent, resulting in blurred vision or distortion. And it will affect the wearer's adaptation to the progressive lens.
Driver's protective glasses
The principle of the driver's protective glasses is to use the special film on the glasses to reflect the strong light hitting the glasses back to protect the eyes. It can protect against ultraviolet, infrared and blue light on foggy and rainy days. In snowy weather and at night, the wearer can see the scenery more clearly, and it can also increase the vividness of red, yellow, green, white, and other colors, and eliminate the glare and reflected light of the oncoming cars when meeting cars at night.
Alloy glasses frame
Spectacle frames made of the alloy have relatively high hardness, are more resistant to friction, are not easy to fade, have a better texture, and are made of more styles, which are essential for fashionistas.
Ray-ban Driving Glasses
Ray-Ban sunglasses, an international brand, were created in the 1930s, especially for the US Air Force, to block the fierce light at high altitude, with a very good UV protection function. Through the precise manufacturing and polishing process, Ray-Ban lenses are free of optical deviation and will not cause eye strain, headache or fatigue after wearing.
Best Ray-ban Wayfarer Alternatives - Vans Spicoli
As for the Ray-ban Wayfarer alternative, the Vans Spicoli would be recommended. If you are looking for a brand to rival Ray-ban for rock and roll col, you do not need to look much further than Vans. While better known for skate apparel, the brand also sells shades including the Spicoli frame that has a lot in common with Wayfarer. In addition, these Wayfarer glasses come at a cheap price and they are under $15.
Of course, besides these Wayfarer glasses alternatives, there are also some other choices available. You can search for them online.