Eyeglasses chain stores have unified standards.
Due to the different management systems, the traditional business mainly relies on differentiated management and it enables member enterprises to have different business scope and modes and form complimentary benefits. Often, member enterprises are not required to implement unified management, with the unclear division of labor and uncertain responsibilities. The main store of a chain store and other stores shall form a clear division of labor in their professional functions, requiring the implementation of a unified management system, unified purchase, unified operation, and unified management. All the stores under the jurisdiction implement the unified management norm form formulated by the headquarters to form a unified norm.
Types of Varifocal Lenses
As is well known, there are several types of varifocal lenses. So, in this section, we will list some the types of varifocal lenses.
Standard varifocal lens: standard varifocal lenses are the entry-level varifocal options and are chosen as an enhanced alternative to bifocals. They have clear and fairly wide focal areas for distance, reading, and in between.
Premium varifocal lens: premium varifocal lenses are also called free form varifocals or back surfaced digital varifocal lenses. It offers much clearer vision at all points and is a significant step up from a standard varifocal lens in terms of vision, clarity, focus, and ease of adapting to them. They are created using the latest computer-driven equipment and have a wider field of vision at the distance, intermediate/in-between, and reading focal points.
Why do so many people like rimless glasses?
Rimless glasses are lighter because they have no frame and are made of memory titanium alloy, which greatly relieves the pressure on the bridge of the nose and eyes and makes them more comfortable to wear. And because there are no frames to tie them down, the wearer has a wider view. Rimless glasses style is more diverse and stylish. They are rich in color, so loved by young eyeglasses.
Metal square frame eyeglasses
A large square frame shows a face small, with a strong stylish sense. A lot of stars often use it for concave modeling, making their whole collocation more tide. People with diopters try to avoid choosing such large frames as daily optical glasses to wear.
Let the rectangular glasses reflect the fashion aesthetically.
Modern frames are part of fashion and are no longer just medical devices. The person who matches glasses wears glasses, does not hope to expose their shortcomings, but hopes that the glasses can play a decorative role, making up for the shortcomings. The important rule is that according to the face shape, you can choose the appropriate glasses frame to highlight the appearance, to give people a sense of symmetry and balance. For example, people with square faces can wear circular frames and break feelings of edges, and the square frames can add the angular sense of a round face.
The Disadvantages of Polycarbonate Lens
In this section, we will show you the disadvantages of polycarbonate glasses.
First, the polycarbonate lens is expensive than other regular lenses. It can cost up to double the price of regular eyeglasses.
Second, compared with high-index lenses, polycarbonate glasses have a lower abbe value, which is used to measure the dispersion of light for different eyeglasses lens materials. Polycarbonate lens rates lower mean they have the potential to cause slight chromatic aberrations in your peripheral vision.
Third, compared with Trivex lens, polycarbonate lens has bad durability since they are thinner and lighter.
Optometry for prescription glasses
The key prerequisite for proper glasses is accurate optometry. In foreign countries, professional optometrists are generally required to be qualified to issue prescriptions for optometry. However, this is not very standardized in China. Many optometrists have only been trained for a short period of time and do not have the basic knowledge of ophthalmology. For some complex situations, they may not give a proper prescription for glasses. Therefore, optometry should choose a qualified institution. If you are adolescents, people with high myopia, people with anisometropia, etc., you may need to dilate your pupils for optometry. It is best to go to the optometry center of the hospital for optometry
