are lenses or frames more expensive? | KOALAEYE OPTICAL

are lenses or frames more expensive?

The Disadvantages of Trivex Lenses

In this section, we will show you the disadvantages of Trivex lenses.

  • Trivex lenses have less availability, especially compared with polycarbonate lenses.
  • Trivex lenses cannot provide the same degree of thinness as high-index lenses.
  • Trivex lenses are expensive than regular lens materials.


What are bifocals?

A bifocal lens is a lens with two focal points. Because of the imaging principle of the lens, even half of the lens can still present a complete image, and the two images do not interfere with each other. In the past, both short-sighted glasses and presbyopia glasses were called single-focal lenses, which had only one focus. Later it developed to the bifocal lens, and the same lens is divided into upper and lower two parts. The upper part of that lens is used when seeing far, and you look down when seeing close objects, just the reading distance, naturally used the second half.



How to Find Reading Glasses Strengths?

With the increase of age, your vision may begin to decrease and this is an inevitable change in your life. So, when you are trying to decipher some smaller prints, you may need the reading glasses.

When your vision begins to decrease, do not worry, this is a normal change. You will find that the deterioration insight often occurs around the age of 40. The technical term for this condition is called presbyopia, a natural, age-related change in the lens of the eye which makes it more difficult to focus on smaller print and close-up objects.

The condition may become worse as you are near 60 years of age, depending on the type of near distance tasks you performing. Of course, you also need to consider the actual situations.


How to protect your contact lenses?

When wearing contact lenses, do not drop any eye drops, and only use a special moistening solution for contact lenses. In daily life, we recommend that dry eyes can be relieved with lubricating fluid, but we do not advocate frequent use of lubricating fluid, so as not to make the eyes become dependent on lubricating fluid. The right way is to do blink training. The ingredients contained in the eye drops will remain in the lenses, which will cause certain damage to the eyes and pollute the lenses. Some eye drops can make the lenses tinted after use, which will affect the transmittance and a refractive number of the lenses and make the vision blurred. Ladies who need to make up should wear contact lenses before making up. When removing makeup, remove contact lenses before removing makeup, to avoid the makeup sticking to the lens and damaging the lens and eyes. Lenses should not be lent to others to avoid cross-infection of eye diseases. You can't wear contact lenses while swimming or bathing.



How Do Prism Glasses Work?

After learning what prism glasses are, you should know how prism glasses work. So, in this section, we will show how prism glasses work.

People with binocular are struggling with seeing two images instead of a single image. The light they see falls in different places on their retinas, which causes distortion and doubling of what they are seeing.

Meanwhile, prism glasses are mostly used to deal with double vision, making it easier to maintain binocular vision, which is the ability to maintain focus on an object with both eyes. With the prism glasses, the light bent before it hits the retina. It is redirected so it falls correctly and the brain can interpret the message as getting in the usual manner, resulting in a single clear picture of seeing.


Glasses are tools for correcting vision.

The basic function of optical glasses is to correct vision. Accurate correction of vision is an effective tool to control the further increase in degrees. If the difference of binocular degrees is great, correct vision can not only improve stereo vision but reduce the burden of a single eye. They help correct myopia, farsightedness, astigmatism, improve visual function, to see more clearly. Let you get a clearer vision and visual experience.


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How to Clean Glasses

To clean glasses by yourself, you need to be careful and use the correct way to avoid some damage to the glasses such as scratches, etc. So, follow the below steps to clean glasses lens.

1. Before cleaning the eyeglasses, you need to wash and dry your hands first. You can use the soap to wash your hands dry them.
2. Rinse your glasses under a gentle stream of tap water. This way will remove dust and other debris and avoid causing scratches on your lenses. But one thing you need to pay attention to. Please do not use hot water since it can destroy some eyeglasses lens coatings.
3. Use a small drop of lotion-free dishwashing liquid to each lens. You can only use lotion-free brands.
4. Then gently rub both sides of the lenses and all parts of the frame. Make sure to clean every part of the eyeglasses.
5. Rinse both sides of the lenses and the frame. Make sure to remove all traces of the soap. Otherwise, it will cause the lenses to be smeared when you dry them.
6. Shake youreyeglasses to get rid of the water on your lenses gently and inspect the glasses carefully to make sure they are clean.
7. Then dry the lenses and frame with a clean and lint-free towel. Make sure the towel is clean, or the dirt or debris on the towel will smear and scratch your glasses.

After all steps are finished, you also need to check your glasses again and check whether they are clean.

As for how to clean glasses, you can follow the above steps. But when cleaning your glasses, you should be careful enough. When cleaning your glasses, something you can’t do. In the following section, we will list some of them.

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