Unspoken rules of glasses industry

Rule 1: Your lens power may be different from the real power 100 degrees.

The optometry equipment in many optical shops is very simple, except for the computer optometry instrument, which is an eye chart. In fact, the error of computer optometry instrument is very big. Even if the same customer and optometrist use the same computer optometry instrument, they may get a difference of 50-75.

The error of lens processing is also great. For example, a 700 lens, due to the technical reasons of the frame and processor, the actual degree may be 757, but few customers realize it.

Unspoken rule 2: More than half of the optometry process in optical shops is useless!

Do you know that the standard optometry process takes forty minutes? Most optical shops can do it in less than ten minutes. Not to mention how many necessary optometry links they have omitted, there are many necessary optometry equipment, such as comprehensive optometry instrument, slit lamp, curvature instrument and so on. Can the detected degree be accurate without professional equipment?

Rule 3: Ultra-thin lenses may accelerate the damage of your glasses!

The thinner the lens, the higher the refractive index, but the higher the price. Merchants have grasped the psychology that the more expensive the better, and painstakingly recommended lenses with higher refractive index to us. You know, in fact, the higher the refractive index of a lens, the greater the dispersion, and the easier it is for your eyes to get tired. To some extent, you can't even perceive the difference between weight and thickness. For example: 400 myopia, the merchant even suggested that customers choose 1.67 lenses. Apart from doubling the price, the difference between the thickness and weight of the lens is actually very small.

Rule 4: Colored contact lenses will stain your eyes!

As far as the beauty lens itself is concerned, some well-known brands such as Johnson & Johnson adopt sandwich technology, and the pigment layer approved by FDA for safe use is embedded between two layers of transparent lens materials to prevent the pigment from directly contacting the eyeball. However, some cosmetic lenses produced by informal businesses are directly coated with color layer, which is easy to cause many eye diseases such as corneal staining, and the safety of lens staining materials is extremely difficult to guarantee. In addition, cosmetic lenses also involve many standards such as oxygen permeability and comfort, and their technical content should not be underestimated. Therefore, while pursuing beauty, don't forget that health is more important.

Unspoken Rule 5: The so-called unconditional refund is actually an exception to lenses!

With glasses, the merchant promises a full refund if he is not satisfied. But in fact, when you really want to return, you can't return the camera except for a long wait and layers of approval. The reason is very good: because it is based on your degree, it can't be used if it is returned to others. In fact, many optical shops take advantage of this hidden rule, and even if they remove their lenses, they make a lot of money.

Rule 6: The big glasses you are wearing may be fake!

Glasses, especially lenses, need special instruments for identification, and many merchants also use the product characteristics that can't be judged by the naked eye to dope big-name products. There is still a 30% chance that the so-called big-name glasses you bought are fake!

Many Taobao shops have vowed to inspect the goods at the counter. In fact, there is no professional equipment, and the counter has no ability to verify the truth.

Unspoken Rule 7: The expensive "Essilor lens" is not necessarily the real thing!

Eternal glasses are the glasses with the highest cognitive rate, but they are also well-known brands with the most fakes. Black-hearted shops make money and confuse their eyes with fakes. Can you tell whether it is true or not?

Unspoken rule 8: 80% optometry in optical shops is not real optometry!

The whole optometry process, most stores are done in ten minutes. In fact, we just opened a new mirror according to the degree of the old mirror. Do you know that the old mirror data reference is only a basis for optometry? The standard optometry process is: consultation, old lens test, astigmatism test, red and green visual standard test, binocular visual balance test, insertion and fitting adjustment, etc. And many optometries completed in ten minutes omit many necessary links, and you only need to refer to old glasses to get the degree of your current glasses. This is really an efficient speculative optometry!

Unspoken Rule 9: Not everyone is suitable for wearing invisibility cloaks!

Not everyone is suitable to wear contact lenses. Whether you can wear contact lenses requires a comprehensive optometry examination. Some people, such as glaucoma, chronic dacryocystitis, conjunctivitis, corneal ulcer, hyperthyroidism and other diseases, cold patients, primary and secondary school students, allergic people, etc., can't wear contact lenses.

Rule 10: It is actually very difficult to adapt to progressive multifocal lenses!

As soon as the people in the optical shop saw your luxurious temperament, they enthusiastically recommended progressive multifocal glasses to you. It is said that you can see far and near, and you can do it with one hand. You will feel uncomfortable at first, and the optical shop will tell you to wear more, and you will get used to it gradually. Is it true?/You don't say. /You don't say. I'm telling you, that's not the case. Due to the limited height of glasses lenses, this limits the excessive range of glasses, and it is really difficult to adapt.