How to distinguish the diameter of the cosmetic contact lens and the diameter of the tinted contact lens? How to choose the degree and time of cosmetic contact lens

Colored contact lenses are a product that many people have worn and there are many brands. So how do we distinguish between the diameter of colored contact lenses and the diameter of colored contact lenses? How to choose the degree and time of cosmetic contact lenses?

How to distinguish the diameter of the colored contact lens from the diameter of the tinted contact lens

The diameter of cosmetic contact lenses is divided into cosmetic contact lens diameter and colored contact lens diameter. The cosmetic contact lens diameter refers to the entire part, including the transparent part without color, while the colored diameter refers to the part of the lens that covers the eyeball.

my country's food and drug administration stipulates that the maximum diameter of cosmetic contact lenses should not exceed 14.5mm, so the diameter of cosmetic contact lenses currently on the market is in the range of 13.8-14.5mm. In fact, the effect of wearing colored contact lenses still depends on the color diameter. When wearing cosmetic contact lenses, you should follow the golden ratio of pupil to eye, which is 1:2:1. This way, they will look better when worn.

The diameter of the cornea of ​​Asians is between 11.5 and 12 mm, so choosing contact lenses with a diameter of less than 14 mm will look more natural. Choosing contact lenses with a diameter of more than 14 mm will have a good magnifying effect on the eyes.

1. Base curve of the beauty lens

The base curve is the curvature of the eyeball when viewed from the side. Our eyeball is a sphere and the lens also has a curvature, but if the curvature is not appropriate, lens slippage will occur. Sliding the lens means the lens moves up and down when you blink. Generally, this happens to large-diameter cosmetic lenses and cosmetic lenses with too large base curves. This also happens to small-diameter cosmetic lenses that don’t fit you.

The base curve of us Asians is approximately in the range of 8.4-8.6mm. We can refer to it when purchasing, but this alone is not enough and we must also refer to the diameter. It is best to go to an optical shop for a test before buying.

2. Water content of cosmetic contact lenses

The higher the water content, the more water the contact lenses absorb, and the easier it is for your eyes to dry out. Some people think they have dry eyes because the water content of the contact lenses they wear is not suitable for them. In fact, this is not necessarily the case. Generally speaking, contact lenses with a water content between 36% and 38% are very moist.

How to choose the degree and time of cosmetic contact lens

1. Degree

When choosing the degree, we should consider lowering the degree, which is lower than the degree of glasses with frames. Because contact lenses are attached to our glasses, if the degree is too high, the glasses will be tired. If the vision is 1.0 when wearing the frame, then the degree of the contact lens is reduced by 25 degrees or 50 degrees.

Many people who wear glasses have some astigmatism to a certain extent. In fact, astigmatism means seeing things blurry, which has nothing to do with the degree of the glasses. Contact lenses do not have astigmatism degrees. If the degree of astigmatism is not very high, there is actually no impact on wearing cosmetic contact lenses.

2. Time

The usage time of contact lenses can be divided into annual, monthly, weekly and daily. You can buy according to your needs.

① Annual throw, advantages: best material, good formability, high cost performance, and more diverse choices in patterns and colors. Disadvantages: It is more troublesome to care for and it is easy to breed bacteria.

②Monthly disposable, advantages: more convenient and hygienic, better moisture content, and softer. Disadvantages: The price of this type of contact lenses is higher than that of annual disposable ones, and the material is relatively poorer.

③ Daily disposable, advantages: convenient and quick to use, can be thrown away after use, and replaced daily for more hygienic. Disadvantages: Daily disposables are more expensive, and the material is inferior compared to the other two, and the comfort is not that high.