What is a progressive lens?
Progressive multifocal lenses are lenses with different upper and lower powers for seeing far above and below for seeing near. The distance from the fixed far power above the lens to the near power fixed below the lens does not change suddenly, but a gradual transition between the two through the gradual change in refractive power. Compared with ordinary lenses, there are many advantages. The appearance of the lens is like a single vision lens, and the dividing line of the power change is not visible. Not only is the appearance beautiful, but more importantly, it protects the age privacy of the wearer, and there is no need to worry about revealing the age secret due to wearing glasses.
Since the change of the lens power is gradual, there will be no image jump. It is comfortable to wear and easy to adapt. So it is easy to be accepted. Because the degree is gradual, the replacement of the adjustment effect is gradually increased according to the shortening of the short distance. There is no adjustment fluctuation, and it is not easy to cause visual fatigue. Clear vision can be obtained at all distances in the visual range.
Such a pair of glasses meets the use of long-distance, near-use and various distances in the middle at the same time. It is especially good news for teachers, doctors, music workers, and computer operators, because these people not only need to see far and near objects clearly, but most of the time they also need to be able to see middle distance objects such as blackboards, piano scores, and computer screens. . This is not possible with any lens other than progressive lenses.
What are the colors of the fishing polarizer?
Amber, yellow, or orange lenses are very suitable for wearing on cloudy days. They can have a very clear vision, but they are not suitable for use on sunny days. Gray or dark green lenses can maintain the most natural original color when viewing objects, which is a good choice. Sunglasses are not only required to be worn in summer but they must also be used throughout the year. Wear it on sunny days and also on cloudy days. Don't think that the sun is not strong on cloudy days and the weather is not hot, so you don't need to wear sunglasses. The harmful ultraviolet rays will harm your eyes unknowingly. Therefore, even if it is a cloudy day with thin clouds, you must still wear sunglasses to protect your eyes.
What Is Bifocal Lens?
Bifocal lenses are divided into two parts to accommodate two different prescriptions in one lens. One is for distance prescription and the other is for near vision prescription. Bifocal glasses are used to correct the presbyopia eye condition.
Bifocal lenses are with lines separating two different prescriptions. With bifocals, you don’t get the single-vision lens look with them as you do with progressive lenses. If you don’t need to see through two prescriptions, bifocal glasses are an excellent option. Bifocal glasses come with the following features:
- Two vision zone. (One for near vision and the other one for distance vision.)
- Has a distinct line separating the powers.
However, with bifocal glasses, you may have trouble reading computer screens and causing a greater risk for computer vision syndrome.
Agstum Titanium Rimless Flexible Frame
AGSTUM provides the best quality optical frames and sunglasses. Hand-ground materials and carefully designed to reflect that AGSTUM glasses have the true interpretation of excellent texture and perfect taste, showing a distinctive, outstanding, elegant, and noble temperament.
AGSTUM is committed to providing the highest standards of customer service to every customer. You can frame the lenses at your local optical shop. These frames come with clear lenses that won't hurt your eyes.
Thickness of lens
The thickness of the driver's glasses affects the use of glasses in a way. The glasses with thicker lenses can be more durable to prevent the glasses from being irritated and accidentally broken, effectively protecting the eyes.
Types of aspheric lenses
There are two types of aspheric lenses: single aspheric surface (single aspheric surface for short, different from the outer aspheric surface and inner aspheric surface) and double aspheric surface (double aspheric surface for short). For the outer aspheric surface, convex is an aspheric surface and concave is a spherical surface. For the inner aspheric surface, a convex surface is a sphere, and a concave surface is an aspheric surface. In addition to correcting aberrations, the double aspheric lens also improves the effective field of vision compared to the single aspheric surface. When people's eyes look through the edge of the lens to see things, like driving when looking at the reflective mirror, it often affects vision because of the large aberration at the edge of the lens. Previous designs of aspheric plates have analyzed a single ray of light passing through the center of the pupil. Wavefront technology controls the entire beam of light passing through the pupil, eliminating high-order aberrations.
The clear frame is paired with wire glasses.
Compared to traditional chunky glasses, gold-rimmed glasses have less color saturation, so they are almost skin-neutral. Gold-rimmed glasses and clear frames are similar in style but more decorative. The geeky-chic style has become popular since the Gucci fashion show, which started with large frames. Who says you can't be stylish with glasses?