how do i choose the best sunglasses?
Sun, Apr 03, 22 By : Koalaeye
How To Use Contact Lens Correctly? Check your eyes for abnormal cases. Do your eyes sting or dry? If so, it is recommended not to wear contact lenses for the time being. Look in the mirror to see both eyes carefully, if it is red and swollen or if is both eyes full of bloodshot? If you do, you can no longer wear contact lenses, and you can go to a professional store for inspection. After putting on the contact...

How To Use Contact Lens Correctly?

Check your eyes for abnormal cases. Do your eyes sting or dry? If so, it is recommended not to wear contact lenses for the time being. Look in the mirror to see both eyes carefully, if it is red and swollen or if is both eyes full of bloodshot? If you do, you can no longer wear contact lenses, and you can go to a professional store for inspection. After putting on the contact lenses, block the left and right eyes respectively to see if the vision of one eye is clear. If the eye vision has decreased or blurred, check if the lens is dirty. If the lens is still the same, you should go to a professional store to find out the reason.


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.



Gold round frame eyeglasses

Round metal frames have become a hot trend in the last two years, and the pop culture of metal glasses has become unstoppable. A round frame divides a big frame and a small frame, and a small round frame is more delicate. But the requirement for facial features is very high, and the big round frame is more lively and lovely.

But for glasses, in addition, to become fashion accessories, it is very important that they should be commensurate with their temperament, personality. Small round frames are more suitable for small faces and are more delicate, while larger faces will look larger and rounder.


Do prism glasses have side effects?

Prism glasses do not have side effects. Prescription prism glasses are designed to help your vision. Prism glasses are not apparently different from general glasses in terms of thickness. It may take a few days to get used to wearing new prism glasses or newer prescription glasses. There may be some eye strain during this time.



How to choose frames?

You can choose a thicker frame with the lens, and then pay attention to the temple. It is better to have a little weight, or the frame is easy to lose forward. The shape of the frame can be elliptical. If the frame is rectangular, the rim of the lens may be a little thick. Choose frame TR90 plate and the frame will be wider than ordinary alloy. Of course, if you like metal, there are now metal frames with thick frames.


Titanium alloys have low thermal elasticity

The thermal conductivity of titanium is about 1/4 of nickel, 1/5 of iron, 1/14 of aluminum, and the thermal conductivity of different titanium alloys is about 50% lower than that of titanium.

The elastic modulus of titanium alloy is about 1/2 that of steel, so its rigidity is poor and is easy to deform, and it is not suitable to make slender rods and thin wall parts. When cutting, the spring back of the processing surface is very large, about 2 ~ 3 times of stainless steel, resulting in severe friction, adhesion, and bonding wear of the knife surface.



Advantages Of Acetate Frames

  • Firmness and good gloss. The style is beautiful. It is not easy to be deformed and discolored, and it is durable.
  • It is not easy to be corroded by the sweat of the skin and other irritants, and it will not be discolored by ultraviolet radiation.
  • Diverse styles, various colors, suitable for many types of people, and easy to match clothes.
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