Why Won'T The Screw On My Glasses Tighten? | KOALAEYE OPTICAL

Why Won'T The Screw On My Glasses Tighten?

How to Choose Glasses for Heart Shaped Face?

Wearing a great pair of glasses can make you look more beautiful and fashionable. You want to find a pair of eyewear to correct your vision. Of course, they should be comfortable to wear.

Everyone has their unique style. So, finding a pair of great sunglasses is not an easy job. So, in this post, we will show you some suggestions to glasses for heart shaped faces.

Before proceeding with how to choose glasses for heart shaped face, you need to know whether you have a shaped face. Heart shaped face has some obvious features, such as a broad forehead; high, prominent cheekbones; a narrow jawline; and an angular chin. So, you can check whether you have these features.

However, if you do not know what face shape you have, you can click here to take a reference and have a check.

After checking the face shape you have, we will show you some glasses for heart shaped face.


Titanium is currently too expensive to refine.

It is highly demanding in buckling, stamping, cutting, and welding. The extraction of titanium, like that of aluminum before the 19th century, was quite costly and produced in limited quantities, so it was used only in extremely important fields, such as aerospace, electronics, precision instrument manufacturing, and so on.



What kind of glasses can people with round faces choose?

Always thought, like what has been said on the Internet, if you wear black frame glasses with large lenses, they can make you look small on the face. This is a mistake, because the black frames are too obvious, creating the wrong area on your face where the glasses are too small.

And for this kind of rimless glasses, because the bottom part is transparent, they will not destroy the partition, and you will feel the face is pretty sharp. For a man with a round face, the appropriate choice is a flat or pear-shaped frame. For a woman with a round face, in principle, she should avoid choosing any very obvious characteristics of the frame, and should not choose a too round or straight-line frame. Round faces are suitable for slender or square frames or pear-shaped frames. The human face of a round face is shorter, so, they had better match the slender glasses frame that takes curve slightly to reconcile the whole feeling. The square glasses or the frame with angle, are helpful for modifying the facial ministry line, highlighting the longitudinal line.


Should I wear driving glasses at night?

In fact, it is not safe to use any colored lenses while driving. You might consider how much color plays in your average driving experience. Red, yellow, green, orange traffic signs, and other vital signs are designed to remind you to pay attention to safety signals and directions while driving. However, if you see everything turn yellow, you may miss a sign and end up making the wrong decision at the traffic light, or worse, an accident.

Another disadvantage is that they do not have a prescription. If you are looking for a pair of standard night driving glasses on the market, you will find that most of them are standard over-the-counter glasses. To have night-driving glasses that can correct vision, you must customize them in an optical shop, and the price is much higher. Under the hype of the night vision feature, you can expect the cost of prescription night driving glasses to be too high. You can find more information about how prescription glasses work on our blog!



If you need reading glasses when using a computer, you may want to choose a lower reading glasses power. This is because most people view their screen from a greater distance from their eyes than when they are reading a book or a magazine.

However, if you need reading glasses for looking at something very close or very small, you may need a pair of stronger power glasses.

In most cases, when two reading glasses’ powers seem equally suitable, choose the glasses with the lower power. Picking reading glasses that are too string typically will cause more discomfort problems than reading glasses that are a little too weak.


Why do spectacle lenses fog up?

The fog on the surface of the lens is essentially related to the saturation pressure and water vapor liquefaction. The air is full of water molecules, which are constantly doing irregular movements. When there is no temperature difference, water molecules keep hitting the surface of the lens and will keep bouncing off. The lower the temperature, the slower the speed of movement. Therefore, when water molecules hit the cold lens from the hot air, on the one hand, they move too slowly to fly out in time. On the other hand, because of the relatively low temperature of the lens itself and its vicinity, the water vapor will liquefy. As a result, more and more water will accumulate on the lens and form small droplets, eventually forming a foggy layer. As the lens heats up, the mist evaporates back into the air, and the fog disappears.


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Advantages of acetate glasses frames

Acetate frames are Lightweight and comfortable. As one of the daily necessities, the lightweight acetate frame will not bring a heavy burden to the bridge of the nose. Even if you need to wear glasses all day, you will not feel too much discomfort.

Acetate frames are durable. This is the key factor that makes acetate frames stand out from traditional plastics or other materials. Acetate frames are made by cutting, molding, and polishing multiple pieces of material, which makes them as strong as metal and ideal for eyeglass frames.

Acetate frames can complete various designs. Acetate makes the design easier to maintain. Acetate fiberboard can be designed with colorful patterns, different layers, and many colors. Embedded design can maintain design features more effectively without spraying or painting.

Although acetate frames are more expensive than ordinary plastic frames, it is more cost-effective to choose a more durable acetate frame because glasses are our daily necessities for a long time. Moreover, acetate is comfortable, light, and stylish. Therefore, next time you decide to buy a new spectacle frame, you can try a spectacle frame made of acetate.

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