What Do Tinted Sunglasses Do? | KOALAEYE OPTICAL

What Do Tinted Sunglasses Do?

Are the glasses purchased online of good quality?

Always, there are some people who question online shopping, whether the quality of the glasses purchased online is up to standard. Then I have to ask, is the quality of the glasses bought in the physical store good? Most people do not have the ability to judge the quality of glasses. It can be said that they decide which to buy based on an inexplicable idea. Therefore, for those who do not understand glasses, the quality of the glasses purchased online is not a question we should consider. In my personal experience, there has been no quality problem with the glasses purchased online, and for the same price, the glasses purchased in physical stores are much worse than those purchased online.


Persol PO2469V

If you want the best men's glasses with the best name and price, there's an Italian designer brand Persol. The steel frames come in eight different colors, from bold black and gold to soft gray. These frames provide what Persol calls Meflecto, a flexible stem system that eliminates pressure on the head.



Color process of Contact lenses

Pigment printing process

It refers to the direct printing of pigments or patterns on the inside of the lens and then drying, which is the main production process of poor-quality chromatic contact lenses. Usually, small factories and small workshops use this method. The lens is being phased out because the pigment can easily seep out from the surface during wearing, causing discoloration and staining, and irritation to the eyes, which is a big risk.

Pigment build-in process

To be specific, the lens made by sandwich technology is a three-layer structure, the front and rear are colorless transparent layers, and the middle is a colored layer. After the processing of sandwich technology, the color layer is wrapped in the middle of the front and rear transparent layer, so that the pigment will not contact the eyes, which will not cause irritation and injury to the eyes. The downside of this process, however, is that the lenses are slightly thicker than normal contact lenses and are less oxygen-permeable, so they are not suitable for long-term wear.

The pressed film manufacturing process

This is a relatively new method of a similar sandwich process, and the color (pattern) is also made between the front and rear layers of the lens. But the color (pattern) is used to fill in the film process. During lens curing, the pigment seeps into the material instead of sticking to the surface. It feels as if the lens is covered in color within a single layer. This reduces the middle layer and makes the lens thinner, which naturally makes it more comfortable and permeable to oxygen.


Features of Diamond Face Shape

Before proceeding with the glasses for diamond face shape, you need to know how to figure out your face shape and the features of the diamond face shape. This section will list some features of diamond face shape.

One of the most common features of diamond face shape is the presence of angles and pointed features and the widest part of the face is the cheek. And the forehead and the chin appear to give height to the face.

The forehead of the diamond face shape is not broad or wide. The size of the forehead is smaller than the cheeks indicating the upper part of the curve of the diamond. The shape of the cheeks is angular and the angles of the face are the widest feature on the face with the cheekbones placed a little higher. The jawline of the diamond face shape is narrower and is smooth with no angles or pointed features. And the lower part of the face is quite pointed or lacks angular features.



What are nose pads?

Nose pads include stipule stalk, stipule boxes, and stipules. The stipules are in direct contact with the nose and play a role in supporting and stabilizing the frame. Certain molded plastic frames may not have stipules and stipule boxes, and the stipules are connected to the mirror ring.

In fact, when designing different materials and different styles, the designer will judge whether nose pads are needed according to the comfort and aesthetics of the glasses. Generally, metal frames are equipped with nose pads, and the nose pads are movable in order to adapt to various nose shapes. Metal frames with nose pads can prevent some people's skin from being allergic to metal. On the other hand, metal looks more rigid and business, and adding nose pads is more beautiful and comfortable. Most glasses without nose pads are sheet-framed glasses. The sheet material is relatively light and non-allergenic. In terms of aesthetics and comfort, no nose pads are more suitable.


Evolution of photochromic lenses

Thirty years after Corning invented color-changing glass lenses, another company has carried forward the color-changing glass lenses --Transitions Optical. In 1991, it became the first company to commercially manufacture resin color-changing lenses. Since its inception, the company has been a joint venture between PPG Industries (51%) and Essilor (49%). In April 2014, Essilor acquired a 51% stake in PPG. At present, the mainstream is resin photochromic lenses.


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How to Choose Glasses for Big Heads?

In this section, we will show you how to choose an eyeglasses frame for large heads. If you do not know how to choose, keep on your reading to find some solutions.

Rectangular frames: Rectangular frames add angle and can slim down the appearance of a larger head. So, if you have a big head, try the rectangular frames glasses.

Oversized frames: if you have a big head, the oversized frames would be a good choice. Oversized glasses will balance out your larger features.

Wayfarer frames: whether your style is retro or geek chic, you will find a perfect fit in trapezoidal wayfarer. The thick angular frames offset rounder cheeks and draw attention down from the forehead. So, if you have a large head, try this style.

When choosing glasses for large heads, you should also find the right shape and color for your signature look and style. While there are a lot of glasses styles for big heads, you should consider glasses with long enough temple length, the length between the hinge of your frames and where they bend around the ear. This measurement is critical for overall comfort, especially on your temples and near your ears.

So, from the above information, you have learned how to choose glasses for big heads.

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