what is sph and cyl?
Sat, Apr 09, 22 By : Koalaeye
Adjust the nose pad The height of the nose pad is adjusted by first holding the glasses with one hand and holding the nose pad with pliers with the other. Then the pliers are lifted up and the nose pad is moved down until the glasses are in the correct position on the face. The asymmetrical adjustment method is to first hold the frame of the eyeglasses with one hand, the other hand clamps the nasal plate with pliers. Then...

Adjust the nose pad

The height of the nose pad is adjusted by first holding the glasses with one hand and holding the nose pad with pliers with the other. Then the pliers are lifted up and the nose pad is moved down until the glasses are in the correct position on the face. The asymmetrical adjustment method is to first hold the frame of the eyeglasses with one hand, the other hand clamps the nasal plate with pliers. Then twist it in the direction of the correct tray position so that the surface of the tray is in contact with the two sides of the nose. Wrap one side of the lens of the glasses to be operated with a cloth first to prevent the screwdriver from slipping and scraping the lens during the operation. Don't scratch your glasses by adjusting your nose pad.


Functional zoning of the store

After determining its own positioning, the layout and functional partition of the optical store is very important. From the overall decoration to the details of the layout, they should reflect the professionalism and coordination of the optical shop. The general partitions of the optical shops include the eyeglasses business area, optometry room, contact lens wearing area, processing room, and cashier desk. The eyeglasses business area can be divided into more small modules separately. The division of the area should have a fixed standard. For example, the arrangement of this area can be selected according to the purpose, user group, occasion, and theme of the glasses.



Evolution of hard coating technology

The first generation of the use of hard coating technology began in the early 1970s, the quartz material is deposited on the surface of a resin lens under vacuum conditions, form a very hard anti-wear film. However, due to the mismatch between the thermal expansion coefficient and the film base material, it is easy to delaminate and crack the film. Instead, it forms the mottle on the surface of the lens, and the effect is not optimal.

The second generation of hard coating technology is the use of the 1980s. The surface of the resin sheet is coated with a material with high hardness and not easy to be brittle and cracked by an immersion process. At this time, anti-reflection coating lenses had appeared and gained the recognition of consumers, but the mismatch between adding hard coating and anti-reflection coating still caused serious lens wear.

The third generation of hard coating technology was developed in the 1990s, mainly in order to solve the problem of wear resistance after coating resin lenses with an anti-reflection film. The hardened material evolved into a polymer organic matrix material.

Fourth-generation coating technology is dominated by silicon atoms, in which the hardened solution contains both organic substrates. It contains inorganic ultrafine particles, including silicon elements, which make the hard coating not only tough but also hard.


SaintShilan Titanium Rimless Flexible Frame

They are lightweight glasses with transparent titanium lenses. They have a soft silicone nose pad, with no pressure on the nose, ensuring the best comfort to wear! The environmentally-friendly IP electroplating rack -- SaintShilan focuses on high-quality electroplating, making you comfortable to wear at work and comfortable to read in daily life. They help improve vision and improve quality of life. They are always the best gifts to you and your family.



Overnight Glasses

Overnight Glasses is created by experienced members of the optical industry. You'll get high-priced lenses, coatings, and prescription glasses approved by the FOOD and Drug Administration (FDA) and the American National Standards Institute (ANSI).

Production, inspection, and customer support are all done by certified opticians in the US with 100% accuracy. Freeform Progressives Lenses designed by Seiko, Transitions Lenses, Trivex Trilogy, Nu Polar Polarized films, even the most basic prescriptions for monopod lenses, are manufactured, assembled, and double-checked in the United States by their certified personnel. The inventory includes prescription glasses and prescription sunglasses from well-known brands such as Ray-Ban, Oakley, Dior, Versace, Salvatore Ferragamo, Dolce and Gabbana (D&G), Prada, Tom-Ford,Burberry Eyewear, and Ermenegildo Zegna are both priced at less than half what other retailers offer.


Do I need to buy anti-blue light glasses?

Nowadays, mobile phones and computers are used more and more frequently. Whether at work or in life, it is hard to imagine what life would be like without these electronic products. It is impossible to protect the eyes without using these products. Especially on mobile phones, the current LED screen technology has gradually replaced LCD screens, and the self-luminous characteristics have also caused serious fatigue to the eyes, and there is no need to say that blue light is harmful to the eyes. At present, the truly harmful blue light is the wavelength. In the blue light of 400 to 440 nanometers, this blue light easily causes eyesight fatigue. In the case of heavy use, try to reduce the damage to the eyes and protect the eyes, which is also the main reason for motivating consumers to buy anti-blue glasses.



Pair Eyewear

Pair is designed for children. There are only a few styles of frames, but there are hundreds of colors and patterns on top of the frames, and the top of the frame base can change colors, from pure pink to rainbow tie-dye to NBA logos. Pair also makes limited-edition tops and works with major brands like Marvel and Harry Potter to create themed styles that allow you and your children to showcase your personality. Each frame starts at $60, including standard prescription lenses, and the frames cost $25.

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