The birth of progressive lenses
In 1907, British optometrist Owen Aves first proposed the concept of progressive lenses and got the first patent of progressive lenses. In 1910, Henry Orford Gowlland designed and made a similar lens in Canada, but technical limitations prevented it from succeeding. In 1959, Bernard Maitenaz, a French optical and mechanical engineer, developed the first progressive lens, which was successfully put into the commercial market for the first time and became a milestone in the history of world optometry. With the development of science and technology, the design of progressive lenses has been greatly developed.
Powerful Function of Lens From KOALAEYE
The lens is flat with high clarity. The glasses have an anti-scratch coating, an anti-scratch coating on both sides of the lens, which can effectively reduce the wear of the lens and prolong the service life of the glasses. However, the scratch-resistant coating is not 100% scratch-free but is more scratch-resistant than uncoated lenses. They have Super Hydrophobic coatings, Oleophobic coatings, and ultraviolet protection functions. Glasses are not only fashion accessories but super weapons to protect eyes and restore clear vision.
How much are rimless glasses?
Generally, the price of rimless glasses should be determined according to your choice of frame and lenses. Some of the rimless glasses are very expensive. Most of these rimless glasses are reserved for business people. Generally speaking, if it is for business people, the price will be more expensive. But if you just want to match some of the common glasses, rimless glasses' price usually will not be too expensive, about 15 dollars to 30 dollars. But business people's special glasses frame will be about 150 dollars to 350 dollars.
How do drivers wear glasses or sunglasses better?
We should pay attention to the dim light at night on the impact of vision, At night, for the people who wear glasses, it is best not to drive, but to prevent fatigued driving. If you need to drive, you must choose clear and appropriate optical glasses. When the light is strong in the field, it is advocated to wear light-colored sunglasses with appropriate degrees to ensure driving safety. When wearing glasses to drive, for the observation of road conditions, we should focus on the use of the head movement. Do not use eyes to move, to prevent the effect of the prism, especially the patient with high myopia should pay special attention. Shaded sunglasses, coated with reflective material, block out light from above and increase horizontal and lower light, which makes it easier to see the platform. Clip-on sunglasses are suitable for people who wear glasses themselves. You can go straight with a pair of myopic sunglasses for a higher price.
Which Reading Glasses Are Most Suitable for Me?
If you have never previously required prescription glasses to improve your vision such as nearsightedness or farsightedness or astigmatism, it is highly like that you can correct your vision with non-prescription reading glasses.
People around the age of 40 to will benefit from the low power reading glasses because of the progressive nature of presbyopia. In other words, you do not need prescription glasses to correct your vision.
However, if you are around the age of 60 or older, the strength of the reading glasses will increase. However, you do not need prescription glasses.
How to Choose Glasses for Round Faces?
Before proceeding with how to choose glasses for round faces, you need to what your face shape is. The round face shape has fuller cheeks which can give a more youthful appearance. The chin is rounder and the forehead widens at the top. In some cases, the jawline is softer than other face shapes. However, if you do not know what your face shape is, you can click here to check.
Select the lens.
The choice of lenses is one of the matters to note with glasses. Teenagers are active and often do sports. They can choose resin lenses, which are light, durable, and not broken. For some adolescents with complex refractive conditions, it is best to customize the lens in the case of the need for custom lenses, to get the perfect pair of glasses. Choose the refractive index that is right for you. The thickness of the edges of the lens is related to the size and shape of the frames in addition to the refractive index. The original state of the myopic lens is a circle that is thin in the middle and thick around, and then it is ground into the shape that suits the lens frame. If the thinnest center is relatively far from the edge of your frame, that is, if that frame is large, the edge of the lens will be thicker.