Who should not take lutein? | KOALAEYE OPTICAL

Who should not take lutein?

Eyeglasses in brick-and-mortar stores cost extra.

In order to attract the attention of customers, physical optical stores need to carry out store decoration, and customers need to buy glasses to share the cost, so the glasses in physical stores are more expensive. Physical optical stores have other expenses, such as electricity, employee costs, rent, and so on, which is a big expense, naturally, but also to the customer to share. These are invisible consumption and need to be tied to the customer.


With the user as the core, the personalized service of glasses is provided.

Users can actively participate in the innovation of the product. They pay attention to user needs. Consumption is the basis of production, and brand is formed on the basis of perfect experience and user sharing. Modern enterprises focus on the market on users, and users' experiences are the starting point for product development. No matter what kind of mobile terminal, it is highly customized. In smartphones, in particular, each phone number represents a specific person. Mobile applications can provide more accurate personalized services for different persons.



What Is Anti Reflective Coating?

Anti reflective coating, also known as AR, anti-glare, no-glare, or glare-free coating, can provide benefits to your vision. Anti reflective coating is added to lenses to reduce glare caused by light hitting the back of the lenses to improve your vision and make your eyeglasses more visually attractive.

Anti reflective coating will eliminate all reflections from the front and back surfaces of your lenses. Hence, more light is able to pass through your lenses which improves your vision. At the same time, fewer distractions are visible and the lenses are hardly noticeable, especially in the dark. So, is anti glare worth it? Most people agree that.


What are the features of TR90 glasses?

One of the best features of the TR-90 glasses is impact resistance. If you often drop glasses or accidentally sit on them, this material reduces the impact and the frames will quickly return to their original shape. They are flexible, and can easily show your face. Much lighter than other materials, the feather-light feeling makes them comfortable. Because the TR90 frame has high elasticity and is not easy to break, it has high strength and does not break. The material of TR90 is much more expensive than other PC, CP, and other materials, and the production process is strict, so the price of the TR90 frame is several times more expensive than other frame materials. Because TR90 material has strong wear resistance, chemical resistance, and solvent resistance, it is not easy to be burned. But TR90 material is the most widely used material in China at present, and its safety performance is the best one among all materials.



The life of the color-changing lens

There is a reaction fatigue problem in both compound reaction and bond-breaking ring-opening reactions. Therefore, there is a shackle in the process of discoloration, which is the life of the discoloration lens. Generally speaking, high-quality color-changing lenses can maintain more than 90% color-changing effect after 2 years of use.


Types of Progressive Lenses

At the same time, there are different types of progressive lenses and they are standard PALs, short corridor PALs, computer PALs, and Reading PALs.

Standard PALs must fit your vision needs. They can be added to frames of your choice, but you need to ensure that the frames are the right width and height proportions to grant enough space for the gradient changes in the lens.

Short corridor PALs are made to fit into smaller frames so as to suit a wider range of eyewear styles.

Computer PALs are designed for computer users and other occupations that require strong intermediate and distance vision.

Reading PALs are designed for those who enjoy reading and they can opt for a pair of lenses with a larger close vision zone.


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Why are eyeglass frames are so expensive?

The industrial chain has factories, brand owners, regional general agents, retailers. Each link needs to share the risk and profit. They have high operating costs. In addition to the well-known rent, they have the costs of labor, decoration, and so on. There is another important reason. It is the inventory loss because of the style problems. This aspect of the cost must be amortized. From the structure and appearance design of the glasses frame, the development and application of raw materials, processing technology, to manufacturing equipment and procedures, the actual cost may be much higher.

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