The Truth About Online Eyeglasses Is About To Be Revealed | KOALAEYE OPTICAL

The Truth About Online Eyeglasses Is About To Be Revealed

How Do You Get Rid Of Glasses Headaches? Lettura The Truth About Online Eyeglasses Is About To Be Revealed 6 minuti Prossimo Is Polarized Or Prizm Better?

The lenses of prescription glasses

Common materials for lenses include glass, resin, and PC. The glass is fragile and heavy, and few people wear it anymore. PC film is tough and not fragile, but it is not resistant to high temperature and the surface is easily scratched. The most common type of lens on the market today is the resin lens, which is light in weight, hard to break, and reasonable in price. At present, it is generally recommended that you choose resin sheets, and it is recommended that people with ultra-high myopia choose glass sheets.

Generally, lenses can be divided into spherical and aspherical surfaces according to different curvature designs. When choosing, refer to the degree of the eye. For people with lower degrees, There are fewer differences between the two shapes. For people with moderate to high myopia, aspherical lenses will have better imaging effects and clearer vision.

When choosing a lens, a parameter that is often mentioned is the refractive index. Common refractive indexes are 1.56, 1.60, 1.67, and 1.74. With the same degree, the higher the refractive index, the thinner the lens.


The spirit behind celluloid glasses

Because celluloid material is flammable, it cannot be mechanized and basically needs to be created by hand, which forms a unique set of handcraft modes of Japanese crafters. Today, there are only a few celluloid factories in Japan, and the unique manual process and production are relatively small. This makes celluloid handmade glasses even rarer and more valuable. Celluloid was originally a very common and cheap material, even with a certain degree of danger, but because of the unique craftsmanship of skilled craftsmen, its performance was brought to the extreme, so that celluloid glasses became unique and sought after by some people. The material of the frame is an important factor that determines the comfort of the glasses. While ensuring comfort, people hope that the glasses can have a decorative effect and play a role in clothing matching in different scenes.



Semi-rimless glasses give you a wider view than full-frame glasses.

It is believed that many people who wear semi-rimless and full glasses will have experience greatly. Because semi-rimless glasses have no frame at the bottom, our view expands as we look down, unlike full-rimmed glasses. When looking down, the line of sight is blocked by the lower half of the frame of the glasses, which is very inconvenient.


What Do the Numbers on Glasses Mean?

In this section, we will show you the glasses numbers meaning. These numbers on glasses frames are the measurements that indicate and describe the size of your eyeglasses frames, specifically:

  1. The eye size number (it is the size of the lenses on your frame).
  2. The bridge size number (the distance between the lenses).
  3. The temple length number (it is the size of that part of your eyeglasses frame, which rests upon your ears).

The three numbers mentioned above are the key measurements that describe the glasses measurements of the frames in eyeglasses. For example, you will see three numbers like 51-17-145 at the temple of your glasses. These numbers help the optician to choose the best-fitted frame for your head size and facial features.

All of these three numbers are measured in millimeters. These variations in frame numbers are fitted by a skilled optician so that it should be best fitted, be comfortable and look good on the appearance.



The Benefits of Anti-Glare Glasses

As is well known, glare is the excessive brightness caused by direct light or reflected light. It often occurs when sunlight bounces off a reflective surface like water or snow. Of course, anti-glare glasses can also be caused by other factors.

Standard plastic lenses are able to reflect approximately 8% of the light that reaches your glasses and high-index lenses often reflect up to 12% of available light. Hence, anti-glare glasses come in a lot of advantages.

The anti-reflective glasses can reduce eye strain and make your eyeglasses look more attractive because the anti-reflective coating can eliminate reflections from the front and back surfaces of your eyeglass lenses. With this feature, more light can pass through your lenses to improve your vision with fewer distractions and the lenses look nearly invisible.

In addition, anti-glare glasses are helpful to high-index lenses, which reflect more light than regular plastic lenses. In general, the higher the index of refraction of the lens material, the more light will be reflected from the surface of the lenses.

Anti-glare glasses can protect your eyes from UV rays (sunlight that doesn’t appear on our visual spectrum). This feature can be enhanced by some photochromatic or polarized lenses.


Frame Selection of Progressive Sunglasses

Choose a proper frame range. Only if the frame is not very large and beveled, the frame can be very flat. Because the distance from the glazed to the optical center of a progressive multi-focus lens is 19-17 mm, and the distance between the edges of the frame will be no less than 28 mm if the area inside the lens can be used at close range while maintaining the far sighting field.


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Ray-Ban's clear glasses are of high quality.

As a high-end glasses brand, Ray-Ban leads the youth fashion, frame technology, and style design breakthroughs and innovations. In the shape of the design, the Ray-ban myopia glasses use ergonomic principles and are very consistent with the considerate surface type. They are safe, natural, and comfortable to wear. In the design of the frame, the use of double screws, so that the lens fixed is very stable. And the weak arm end design can be adjusted according to the profile of the face, easy to wear, very bright, and shiny in the vividness of color.

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