How to choose the degree of cosmetic contact lenses? What does the degree of cosmetic contact lenses mean?

Colored contact lenses are a very common product on the market. Many people usually wear them to beautify their eyes. However, colored contact lenses have degrees, so we need to understand how to choose the degree of colored contact lenses. What does the degree of colored contact lenses mean?

Due to the different contact distances between the lenses and the eyes, the degrees of cosmetic contact lenses and frame glasses are different, and they should be selected according to personal circumstances. If you are nearsighted, you can choose the degree of cosmetic contact lenses according to the degree of your own eyes. Frame glasses are placed on the bridge of the nose, with a distance between them and the eyeballs, while cosmetic contact lenses are worn directly on the cornea, with zero distance contact with the eyeballs. It is not recommended to wear cosmetic contact lenses for a long time, and good care measures should be taken. It is not recommended to wear cosmetic contact lenses for a long time, and good care measures should be taken. If the quality is not particularly good, it will cause great harm to the eyes, and even cause frequent tears, dryness and excessive fatigue in the eyes.

The degree of cosmetic contact lenses is the degree of contact lenses converted from myopia. There are two types of cosmetic contact lenses, one is plano lenses, that is, 0-degree cosmetic contact lenses, and the other is prescription lenses, which can help myopic patients correct their vision. This needs to be based on the actual situation of the individual. For people who are not myopic, they can only choose plano cosmetic contact lenses. If they choose prescription lenses, they will experience blurred vision, dizziness, nausea and other discomfort symptoms due to the existence of the degree. Moreover, if the eyes are not myopic, wearing prescription lenses for a long time will also be harmful to the eyes and may accelerate myopia. If you are a myopic person, you need to choose prescription lenses. At this time, you need to convert them into the correct contact lens degree according to your actual degree. For myopic people, it is not appropriate to choose plano cosmetic contact lenses, because plano cosmetic contact lenses have no degree. When they are worn on the eyeball, the wearer still sees everything in front of them blurry. At this time, you need to wear a frame to see things clearly, and wearing prescription cosmetic contact lenses directly can solve these problems well.

The base curve of the cosmetic contact lens refers to the curvature of the cosmetic contact lens, which is an indicator data of the cosmetic contact lens, and its size is expressed by the curvature radius of the lens. The curvature radius specifically refers to the curvature radius of the optical center area of ​​the inner surface of the cosmetic contact lens, and the unit is millimeter. Because cosmetic contact lenses are a kind of corneal contact lenses directly attached to the eyeball. Therefore, the curvature of the cosmetic contact lens is required to match the curvature of the eyeball as much as possible, so as to achieve the most suitable wearing effect. The size of the eyeball varies from person to person, so both medical and optometric testing require contact lens wearers to first use a specific keratometer to measure their curvature, and calculate the parameter base curve suitable for wearing the lens, and then choose the appropriate lens.

The degree of cosmetic contact lenses is the degree of contact lenses. The degree of optometry is the degree of frame glasses, but the degree of frame glasses is different from that of cosmetic contact lenses. It is recommended to go to a regular optical shop to measure the degree before buying cosmetic contact lenses (usually free of charge). After knowing the degree, you can choose the corresponding degree of cosmetic contact lenses according to your own optometry degree. There is a conversion formula for the degree of frame glasses and cosmetic contact lenses: Fo=Fs/(1-dFs) where: Fo—cosmetic contact lens degree; Fs—frame glasses optometry degree; d—the distance between the frame glasses and the cornea (0.012m).