Do photochromic lenses degrade? | KOALAEYE OPTICAL

Do photochromic lenses degrade?

Are rimless glasses in style 2022?

Now the glasses design concept changes with each passing day. The glasses are more and more in line with the aesthetic requirements of modern people, adding style and elegant demeanor to your clothing collocation. Rimless frames are not obvious either in appearance or weight, relieving some of the distress caused by myopia. Rimless glasses not only give you a wider view, but reduce overall weight, and have become a favorite of many fashion trendsetters. Are these rimless glasses your style?


How To Choose Better Night Driving Glasses?

Choose and buy glasses to use a special night with anti - strong night driving lens. The demand is to block 80-90% of the strong lights and harmful lights, and at the same time to make the road more clearly. Choose glasses with thicker lenses, they are more durable and protect the eyes of drivers against irritation and accidental breakage. As common sunglasses and color-changing glasses are only suitable for daytime wear, wearing them at night will seriously affect the driver's vision.

Common light yellow night driving glasses can only block a small amount of light, and is not very suitable for night driving glasses standards. Therefore, in the choice of lenses of night driving glasses, we must do the selection and demonstration of the national authority of the formal institutions to test products, to achieve the desired effect in actual use. Don't buy products that are not up to standards from vendors. Such products not only do not block the lights but may affect the driver to see the road ahead, affecting the safety of the train operation.



The glasses are too loose or too tight at the temple.

If your glasses are too tight on your temples, you will feel uncomfortable. On the other hand, if your frames are too loose, it can make you look not energetic. Either way, you can adjust the frames at home to make them more comfortable. If the arm squeezers your temples. If the frames are metal, hold your lenses in place with your less-used hand. Use your dominant hand to gently press outwards on the corner of the frame, between the hinge of the frame and the lens. Repeat this step on the other side of your body to make your temples looser. If the frame is too loose from the temple. Again, for metal frames only, use the same method as you used to relax the frames, but apply slightly inward pressure on the corner between the hinge and the lens. Repeat on the other side, tightening the fit around the temple. Adjusting the temples of rimless, half-rimless, or plastic frames can break them. You are advised to take these frames to the optical shop for adjustment.


How much do a pure titanium eyeglass frame cost?

For the plastic frame, without a fixed metal rod in the middle, the retail price of the exclusive store is 30 dollars or so. Resin-coated metal frames are inexpensive, 35 to 85 dollars in the store. Because pure titanium is more difficult to make, and the material is more expensive, the frame price often starts from 50 dollars. For example, the ordinary Seiko pure titanium eyeglass frame is about 85 dollars. In Europe and the United States and other developed countries, titanium spectacle frames are popular as a kind of high-grade decoration and fashion. In the past two years, the domestic began to be popular little by little. Titanium spectacle frame belongs to high-grade consumer goods, and the price is usually above 50 dollars.



How to buy prescription glasses online

Consumers should choose different styles of frames according to their age and professional characteristics. Because everyone has different face shapes, different interpupillary distances, and different diopters, the size of the frames should vary from person to person.

Lenses are divided into glass lens, resin lens, and PC lens, and you can choose according to your preferences. The glass lens has a stable refractive index, good abrasion resistance, and stable optical performance, but it is relatively heavy and easy to break. Resin lens with high light transmittance is light, safe, and not easy to break, but the surface is easy to wear. PC lens has a high refractive index, but the surface is easy to wear.


How to Choose Glasses for Diamond Face Shape?

Oval glasses: Oval glasses in the rimless or half-rim are complimenting glasses frames for diamond face shape. So, if you are looking for glasses for diamond face shape, try these.

Browline: The last glasses for diamond face shape we want to mention is the browline glasses. The double bridge that resembles aviator glasses seems one of the attractive choices of glasses for diamond face shape having a bit of detailing on browline with deep dark shades, half rim, tortoise-shell and other designs.


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Difference between green film and blue film

In addition to the usual hardening, anti-fouling, anti-reflection, anti-radiation, and other functions, the green film has remarkable anti-ultraviolet performance, suitable for people who work outdoors for a long time to use. In addition to the general hardening, anti-fouling, anti-reflection, and anti-ultraviolet functions, blue film’s anti-radiation ability is very good, and it is suitable for computer workers and other people affected by radiation greater.

The coated lenses were originally produced in green, mainly to distinguish them from the uncoated lenses. At 515 nm, the reflection increases the reflectivity by about 2%, so there is a contrast, and the green film is seen in the reflection. This film is the most standard anti-reflective film, and it is the best and oldest one available.

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