5 Things You Probably Didn't Know About Buy Eyeglasses Online With Prescription | KOALAEYE OPTICAL

5 Things You Probably Didn't Know About Buy Eyeglasses Online With Prescription

Can You Wear Blue Light Glasses All Day? Reading 5 Things You Probably Didn't Know About Buy Eyeglasses Online With Prescription 6 minutes Next Are There Different Grades Of Polarization On Sunglasses?

How to Get Used to Progressive Lenses?

How to adjust to a pair of new glasses? How long does it take to adjust to a new pair of glasses? In general, there are several ways for adjusting to progressive lenses. In this section, we will show you some of them.

  1. Put on your new progressive glasses in the morning and wear them for at least one hour or two. The next morning, try a few more hours. Develop your tolerance to adjust to them.
  2. When you walk, look straight ahead, not down at your feet. And, point your nose in the direction you want to look, not just looking left or right with your eyes.
  3. Don’t switch between your new pair and the old one frequently.
  4. Make sure your progressive glasses fit properly and don’t slide down your nose.
  5. When you read, don’t move your eyes or head. Move the page or paper instead.
  6. Set your computer screen below eye level. You can achieve that by adjusting your desk or chair.


How to choose blue light blocking glasses?

While trying it on, look at the electronic screen from a distance to see if it stimulates your eyes. Holding the glasses in front of a display screen or under an LED light to see if they reflect blue light on the surface of the lens. It shows that blue-blocking glasses can block blue light. The special blue light flashlight shines on the white cardboard through the lens, the blue light that passes through the blue-blocking lens is noticeably dimmed, while the blue light that passes through the normal lens is not changed at all, which is what the blocking blue light does. You can go to a professional eyeglass shop to detect instruments through the spectrum of professional authority, and the best blue light blocking rate is between 60%-70%.



How to Tighten Glasses by Yourself

After your glasses being used for a while, they will become loosen. In this situation, you may want to ask for a professional optical person to adjust or tighten it. It would be a way but with some inconvenience. So, you can also choose to tighten glasses by yourself.

Why the glasses will become loose? It can be caused by various reasons. Most people wear and remove their glasses several times every day. The back and forth movements of the glasses’ arms will increase the possibility that they will become loose.

If the glasses become loose, you can choose to tighten them by adjusting the temple arms. Most eyeglasses have a screw located at the temple hinge on both sides. To tighten glasses by yourself, you can choose to tighten this screw to make your glasses more comfortable or prevent them from slipping down your nose again. You had better check these screws periodically so you can tighten them before they fall out.


Production technology of progressive lenses

In addition to the evolution in design, the production technology of progressive lenses is also constantly improving: the most representative one is the free-form technology. The emergence of free-form surface technology makes the production more flexible and rapid and can realize a more personalized design. For now, progressive lens design is done on the inside surface of the lens by a computer-controlled lathe, as if a master engraver could carve a piece of stone into a work of art.



Accurate optometry is key.

Optometry before wearing glasses is very key. Children's optometry should choose mydriasis optometry. Mydriasis optometry is a method of optometry designed specifically for children. It works by using drugs to completely paralyze the ciliary muscle of the eye so that it loses its regulatory role. So you can check out the child is true myopia or pseudomyopia. During optometry, you should pay attention to let the child as far as possible to relax, so as not to affect the effect of optometry. For the sake of children's health, it is recommended that parents and friends can take their children to a professional optometry place to choose glasses. In addition, do not rely solely on optometry to determine the child's glasses, but to see which degrees are more suitable.


Frame Selection of Progressive Sunglasses

Choose a proper frame range. Only if the frame is not very large and beveled, the frame can be very flat. Because the distance from the glazed to the optical center of a progressive multi-focus lens is 19-17 mm, and the distance between the edges of the frame will be no less than 28 mm if the area inside the lens can be used at close range while maintaining the far sighting field.


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The Benefits of Anti-Glare Glasses

As is well known, glare is the excessive brightness caused by direct light or reflected light. It often occurs when sunlight bounces off a reflective surface like water or snow. Of course, anti-glare glasses can also be caused by other factors.

Standard plastic lenses are able to reflect approximately 8% of the light that reaches your glasses and high-index lenses often reflect up to 12% of available light. Hence, anti-glare glasses come in a lot of advantages.

The anti-reflective glasses can reduce eye strain and make your eyeglasses look more attractive because the anti-reflective coating can eliminate reflections from the front and back surfaces of your eyeglass lenses. With this feature, more light can pass through your lenses to improve your vision with fewer distractions and the lenses look nearly invisible.

In addition, anti-glare glasses are helpful to high-index lenses, which reflect more light than regular plastic lenses. In general, the higher the index of refraction of the lens material, the more light will be reflected from the surface of the lenses.

Anti-glare glasses can protect your eyes from UV rays (sunlight that doesn’t appear on our visual spectrum). This feature can be enhanced by some photochromatic or polarized lenses.

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