Is Higher Or Lower Vlt Better? | KOALAEYE OPTICAL

Is Higher Or Lower Vlt Better?

How to Choose Glasses for Diamond Face Shape?

After learning the features of diamond face shape, you should know how to choose glasses for diamond face shape. Since there are a lot of pointed features on the face, the best option is to use eyeglasses that have soft rounded curves instead of harshly pointed angles. So, look at the following advice.

Cat eyeglasses: Cat eyeglasses would be a good choice for a diamond face shape. These glasses frames have rounded bottoms so as to hide away the pointed chin and the narrow jawline of the diamond.

Round eyeglasses: Round eyeglasses are also suitable for diamond face shape because the round curve of the glasses hides the sharpness of the pointed chin. Glasses with colored frames are appealing in the case of diamond face shape people.


Note the ratio of the lens to the face.

Usually, the vertical length of the lens of longer glasses can have a visual effect of reducing the proportion of the face. In addition, in the selection of the glasses, you should pay attention to the distance between the end of the eye and the glasses so the best ratio is that the eye is in the middle of the glasses.



Advantages of Metal Frames

The metal frame of eyeglasses conforms to the use performance of the frame. They need the material to have high fracture strength, enough plasticity, toughness, and good elasticity. And after the disappearance of the external force, they can restore to the original shape. This is the regular demand for the high elasticity of the metal frame. They must be able to withstand the atmosphere and human sweat daily corrosion. Usually, the corrosion resistance of pure titanium eyewear will be better than other eyewear. Some glasses will have a variety of wonderful grinding designs, and the material must have high plasticity.


Promises and Warranties of Optical Stores

They have a quality guarantee. Under normal use, the glasses will be replaced with the same value free of charge within six months if there is any quality problem attributable to the product itself. If there is any incompatibility within one month, the lenses will be re-checked and replaced with the same quality lenses free of charge. If you are not satisfied with the style of the frame, you can replace the frame of the same value free of charge within one week.



The quality of the eyeglasses chain stores is relatively stable and reliable.

As the eyewear chain enterprises spread across the whole city or across regions, they occupy a large share of the local market, and the resulting scale effect reduces their own procurement costs and greatly enhances the awareness of brand quality. Therefore, the procurement of eyewear products is critical. Those defective products are much less likely to appear in these chain optician stores, which naturally ensures that overall product quality improves.


What Are Adjustable Glasses?

Are you over age 40 and unhappy with your current glasses for the presbyopia correction? Most people with nearsightedness, farsightedness, or astigmatism need progressive lenses to see objects clearly. But some are frustrated by the relatively limited field of view these and other multifocal lenses provide for intermediate and near vision.

And, those people with presbyopia also have problems. They often are frustrated by forgetting to bring their reading glasses or are constantly needing to put them on and take them off to see clearly at a different distance.

If you also have the same trouble, here is some good news. You can use multifocal eyeglasses to solve these problems and give you clear, unobstructed vision at any distance with just a simple turn of a dial inside the eyeglasses frame.

And these glasses are called adjustable glasses or adjustable focus glasses. They are a versatile and affordable solution to correcting minor vision problems. They compensate for presbyopia and other refractive errors like farsightedness and nearsightedness. They are non-prescription glasses designed for everyday use.

You can see the top to look far away and look down to see near objects clearly because different portions of lenses offer different types of correction. With adjustable glasses, you have one focal length that varies depending on where you are looking.

Anyone can wear adjustable glasses, but they are especially beneficial for people who cannot afford regular glasses or for those who live in areas where regular glasses are not accessible.


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Sales points of note for color changing lens

The discoloration rate of the lens is related to the intensity of ultraviolet light. The stronger the ultraviolet light is, the faster the discoloration rate will be, while the vice versa. The degree of discoloration is related to the ambient temperature. The higher the temperature is, the color of the lens is slightly lighter. Otherwise, the color is slightly darker. With the progress of manufacturing technology, the discoloration rate, especially the fading rate of the discoloration lens has been greatly improved, and the interference of temperature on the color depth is becoming less and less. Either glass or resin lenses react only with ultraviolet light, not visible light, so in some environments, they do not darken.

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