Which is better CR-39 or polycarbonate? | KOALAEYE OPTICAL

Which is better CR-39 or polycarbonate?

How do anti-blue light glasses protect the eyes?

The anti-blue light glasses available on the market, no matter what type, etc., are mainly the difference in anti-blue light effect, light transmittance, and frame, which will affect the cost of glasses. Obviously, the lens is the most important of these. I think that it is basically enough to choose 30% to 40% anti-blue light glasses. It is good to cut off the harmful blue light. It is not necessary to completely eliminate the blue light so that the chromatic aberration will not be too large, the light transmittance is better, and it also has a certain anti-blue light effect.

Of course, to protect the eyes, it is not enough to rely on anti-blue glasses alone. The effect of anti-blue glasses is mainly to reduce the probability of eye diseases, and can not effectively relieve eye fatigue. Normal people between the ages of 20 and 40 blink about 20 times per minute. When you open your eyes and stare at a computer screen that changes rapidly, the number of blinks will be reduced to 4 or 5 times per minute, resulting in serious insufficient secretion of scum and dry eyes. Therefore, no matter how urgent the work is, you must pay attention to the rest of your eyes, close your eyes regularly, use eye drops when needed, and reduce the brightness of the screen as much as possible when looking at the screen. When the brightness of the screen is significantly higher than the ambient light It is easy to cause eye fatigue. Try to use it as little as possible in the dark. To be honest, it is more important to develop a good eye-using habit.


KoalaEye Gold rimless glasses - Lilac

The rimless frames focus on lightness, reducing the pressure on the wearer and increasing comfort. The rimless era says goodbye to the shackles of the frame. The pair of glasses are suitable for all face sizes. Free and comfortable, unique texture makes your temperament unique, gentle elegant, and charming. The radian is beautiful, and the craft is exquisite, in accordance with the feminine soft and gentle characteristic. They are not easy to lose, not easy to damage, durable. They reduce the contact area with the skin, safe and comfortable.



How to protect rimless glasses?

With the continuous improvement of people's living standards, many people begin to pay attention to their quality of life. In the past, many people thought that wearing glasses was for correcting eyesight glasses, but now more and more people use them for decoration, and rimless glasses meet the needs of consumers. Because of its light structure, giving people a sense of fashion, so it is loved by many business people. So how do you protect your rimless glasses?


Are beta titanium glasses frames expensive?

What’s the probable price of a Beta titanium eyeglass frame? The price of β titanium frame and pure titanium are similar, and the price is usually high, But hundreds to thousands, according to the brand and workmanship. Beta-titanium is usually cheaper than pure titanium. Why are titanium and beta-titanium cheap, but expensive to process into eyeglass frames? The so-called pure titanium and β titanium frames are really titanium alloy frames in the strict sense, and the processing difficulty is really great. IP plating must be used for electroplating, so the processing cost is much higher than that of copper alloy, and the labor cost needs to be included.



Replace the nose pad on your glasses

Remove the screws clockwise and use a toothpick to remove the things left of the broken pads so that the new one can be installed. The next step is to fix the nose pad that we just removed from it. Hold the glasses and then the hole for the nose pad is up, then place the nose pad in and press it with your finger. Then you can see that the round hole in the nose pad overlays with the round hole in that part, and at this time, you can turn the screws. When you finally turn it, you usually turn it three times to hold the nose rest in place. Often, the nose pad can be swung back and forth after installation. This is to match the different shapes of our noses.


Don’t Do When Cleaning Glasses

Here are something you can’t do when cleaning the glasses.

1. Don’t use your shirttail, blouse, or other clothing to clean your glasses, especially when the lenses are dry because they will scratch your lenses.
2. Don’t use the saliva to wet your lenses.
3. Don’t use some surface cleaners to clean your eyeglasses because they may damage glasses lenses and coatings.
4. Don’t use some paper to clean your lenses, such as paper towels, napkins, or some tissues. They may scratch or smear your lenses or make them full of lint.
5. Don’t try to remove a scratch on your lenses by buffing away. This action can make the situation worse.


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Trifocal vs Progressive Lenses: Which Are Better?

Each type of glasses has advantages and disadvantages. Progressive glasses offer the wearer a youthful-looking eyewear option, and they can be customized for specific use. Trifocal glasses are not customizable like progressive, but instead, come in a few standard configurations. Trifocal glasses offer a wider intermediate viewing area than progressive lenses do. Hence, trifocal glasses could be more comfortable for computer use.

In addition, trifocal glasses are cheap than progressive lenses. So, they tend to be more affordable.

What’s more, progressive may be used in prescription sunglasses or in photochromic glasses. Trifocal lenses are mostly used in sunglasses or light adaptive glasses, but these may require a special order.

So, from the above information, you have learned some basic information about trifocal lenses and progressive lenses. As for trifocal vs progressive lenses, you may also have gotten some answers.

Therefore, if you want to buy a pair of trifocal glasses or progressive glasses, you can try Koalaeye Optical. It is an online glasses store, providing all kinds of glasses, sunglasses, and frames. Besides, these glasses are stylish and come at a cheap price. With your great convenience, the package will be mailed for you for free.

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