can cheap glasses damage your eyes? | KOALAEYE OPTICAL

can cheap glasses damage your eyes?

The correct method for lens cleaning

Wet it with water first, and then add a little detergent or hand sanitizer to each lens. Dip your fingers to the back of the lens, and then scrub with your fingers. Be careful not to use too much force to prevent the lens from being worn out by grit.

The key here is to rinse. First of all, never use hot water, because hot water will cause the lens to expand due to heat, which will crack the film in the resin lens.

Finally, you should rinse with cold water, do not wipe with a cloth, because any glasses cloth or suede can not perfectly wipe the lens, even the more you wipe it, the more indistinct it gets. If there is hard dust in the cloth, it will scratch the lens.


Do Blue Light Glasses Work?

When wearing blue light glasses, you may ask whether the blue light glasses really work. In fact, many users have the same troubles. To answer this question, some researchers have made research and have found that blue light glasses make it possible to remain fully engaged in our technologically advanced world, without taking on the negative effects of blue light.

With the blue light blocking glasses, you can focus on the task at hand without negative effects. Besides, with the blue light blocking glasses, you can even sleep well and reduce eye strain. You can also test your blue light glasses are real.



Choose a frame for your face

People with round faces should try to avoid round frames, which can make your face look fatter. You can choose a square frame, having a decorated effect, and can make a person look more energetic. Circular lenses are recommended for square faces. Rectangular faces are also suitable for circular lenses. There are not too many restrictions on the choice of lenses for heart-shaped faces. Circular or square pieces are very appropriate, but you can choose slightly larger frames to add momentum and can create a retro sense.


Why do glasses with the same prescription feel different?

The style of the frame has changed. The structure of the new glasses and the old glasses (half-frame, rimless, full-frame) may be different, and the angle of the glasses may also be different, which will cause visual differences and the symptoms of dizziness after wearing the new glasses. If you used to wear rimless glasses or half-rim glasses before and switch to full-frame glasses, you will feel that his field of view is limited and you will feel a little uncomfortable when you see the edge of the frame. If you wear full-frame glasses before, you will feel the edge of the lens when you change to half-rim glasses. It's too bright to adapt. There is another situation, changing from a frame with a nose pad to a frame without nose pads. Because the distance between the lens and the eye has changed, the position of the nose pad has also changed, which directly affects the relative position of the optical center and the pupil, as well as the distance from the back vertex of the lens to the cornea, which naturally affects the visual difference. In this case, you can fine-tune the nose pads, or after a short-term adaptation, you can generally return to normal.



How to Choose Glasses for Square Face?

What glasses suit my face or what glasses suit my square face? If you have the same questions, you come to the right place. This post will show you some advice.

In fact, there is a wide range of eyeglasses available for square faces. Round and oval glasses are the best choice for people with square faces. These frames will soften and balance your strong jawline and add contrast to your face shape.

Now, we will show you some suggestions for the glasses for square faces.

Round glasses: round glasses are a sophisticated, polished look that works well with a square face shape. No matter what color you choose, this style works beautifully with a square face shape.

Browline glasses: as for glasses for square face, you can choose the browline glasses. These glasses are thicker at the top, mimicking the way the eyebrows frame the face. Their unique design is one of the best glasses for square faces.


Common Problems with Varifocal Glasses

In this section, we will list some common problems with varifocal glasses. The most common problem with varifocal glasses is people being unable to focus on what they need to. Losing focus often leads to some discomforts such as headaches or dizziness when performing tasks that require quick changes in near and middle-distance focus.

Besides, some people also experience a sort of swimming feeling when they are walking. It may be caused by being very aware of the distortions in your peripheral vision as well as the reading portion at the lower part of the lenses.

So, how to use varifocal glasses? The best way is to keep yourself from looking downward as you walk. You may also experience soft focus at the edges of the lenses and need to move your head more to see near objects better.


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Glasses Size - Temple Length

The length of the temple is the length of the arm of your glasses. It's how far the arm is bent, all the way to where it intersects the frame. Although lengths may range from 120 to 150 mm, there are some common industry standards:135, 140, 145, and 150 mm. The temples are long enough to extend beyond your ears, so the ends can be changed to match the contours of your head behind your ears.

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