How to choose color contact lenses?The strategy is here

Color contact lenses can make the eyes look big and bright because of various beautiful colors and styles, and they are respected by young people who are pursuing personality and fashion. But you know, when buying and using color contact lenses and their care products, what are the precautions?

Contact lens belongs to medical equipment

Let's take a look at how colorful flat contact lenses are defined. Incidental lenses belong to the national third category of medical devices. It is a lens directly attached to the corneal surface tear liquid layer. By changing the refractive ability of the eyes, it achieves the purpose of correcting refractiveness and treating certain eye diseases.

The country's definition of the third category of medical devices is the highest level. It refers to the implantation of the human body, which is used to support and maintain life. It is potential to danger to the human body. It must be strictly controlled by its safety and effectiveness. It can be seen that colorful flat contact lenses are not "cosmetics" defined by everyone, but a medical device that must be strictly regulated as artificial heart valve and artificial kidney.

Color flat contact lenses are colorful on contact lenses in order to beautify and decorate their eyes.

So, how exactly these colors are attached to contact lenses lenses?

There are usually two ways: one is the "sandwich" method, that is, the color of a layer of iris in the middle of the two soft lenses. Although this kind of lens reduces the effect of pigment on the eyes, the lens becomes thicker and the comfort decreases, and it is more important to affect the oxygen permeability of the lens, which can easily lead to a corneal hypoxia and affect the normal physiological metabolism of the cornea; The other is directly coloring on the lens. This kind of lens has obvious stimulation of the eyes. At the same time, the pigmented pigment also affects the oxygen permeability of the lens.

How to choose to buy correctly?

According to the relevant provisions released by the State Drug Administration recently, remind everyone to pay special attention when buying colored flat contact lenses and their care products:

★ It should be purchased from medical device business enterprises with relevant business license qualifications, and check whether the product is obtained for the medical device registration certificate, carefully check whether the product packaging has the medical device registration certificate number, the name of the production enterprise, the production date and other information, and properly properly properly. Save the purchase voucher.

★ Imported color flat contact lenses and their care products should also be attached with Chinese labels and instructions.

★ Inquiring the relevant information of the medical device registration certificate can be logged in to the "data query" column of the website of the State Drug Administration.

★ Do not greedy for cheap prices to purchase unregistered products from informal merchants or online shops.

When you choose the color flat contact lenses, in addition to the above product information, you must pay attention to whether the parameters of the lens match the arc of the cornea. Because if the lens is loosened, the comfort of wearing a mirror will decrease significantly, and it may also cause corneal epithelium damage and lens shift. If the lens is too tight, although the foreign body sensation when wearing a mirror will be reduced, this is not a good phenomenon, because it is too tightly attached to the cornea, which is more likely to cause the corneal hypoxia, which will cause serious serious complication.

What should I pay attention to when wearing a mirror?

Wearing colorful flat contact lenses also has strict time limit. Generally, wearing contact lenses should not exceed 8 hours every day. For contact lenses with less permeability, wearing mirrors should be shortened. It is recommended to use it for a short time on necessary occasions. Do not wear it from morning to night. Wearing contact lenses for a long time can easily cause corneal hypoxia, corneal damage, and even severe eye diseases such as keratitis and conjunctivitis.

So, how to wear colorful flat contact lenses safely?

First of all, colored flat contact lenses are not suitable for everyone. Before buying colorful flat contact lenses, you must go to a regular institution to conduct a comprehensive inspection of the eyes, including the front of the eye, the bottom of the eye, the eye pressure, the refractiveness, the corneal curvature, the corneal endothelium, the secretion of tear, etc. Wear color flat contact lenses.

In addition, professionals must also understand whether the family history and previous history of the wearer have genetic diseases such as genetic and immune, because these systemic diseases will also affect the safety of wearing mirrors.

Secondly, on the premise that it is suitable for using contact lenses, everyone must also choose a lens that matches the cornea. The good matching state is the basis of ensuring safety wearing mirrors. The correct lens care method is the guarantee of safe use.

In addition to strictly controlling the wearing time, we must keep in mind the following nursing requirements:

● Before contacting contact lenses, we must completely clean their hands without leaving long nails to avoid pollution or damage to the lens.

● The lenses should be carefully cleaned before we wear.

● After the lens is removed from the eyes, be sure to soak it in the special care solution to disinfect.

● Except for special care liquids, contact lenses cannot be soaked with other liquids.

● If you need makeup, you must first wear contact lenses and then makeup, first pick up contact lenses and remove makeup.

● In the case of bathing, swimming or wind sand, and the air dirty, it is not recommended to wear contact lenses.

In addition, any contact lenses have a service life. Everyone should replace the lens according to the limited period of use of the lens. Even if the lens has not yet expired, it should be replaced in time if the lens is damaged. The super mirror can easily lead to keratitis and conjunctivitis.

Only by using, picking, cleaning, disinfection, and preservation of the correct nursing method of contact lenses can we ensure that everyone's wearing mirror safety can be guaranteed.

(Source: Xinhua News Agency, the client of Xinhua News Agency Health China)

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