How to choose the base curve of contact lenses_contact lenses_

When buying contact lenses, you must pay special attention to the data. Everyone should also find that it seems that every contact lens will introduce the base arc now, and everyone does not know how to choose the base arc that suits you. . After all, no one can measure the curvature of their eyeballs, but in such a case, how should we choose the base arc of contact lenses that suits us? One, measure yourself almost In fact, before buying contact lenses, you must have optometry. To determine your own degree, and then choose the appropriate degree through the introduction of the contact lens degree conversion table, and you should also pay special attention to the measurement of your own eyeball base arc. Make sure that the base arc and the base arc of the contact lens are close to each other. Now all the ophthalmology departments of regular hospitals can provide optometry services for us, so there will be no problem in determining the condition of the base arc, so you don't have to worry about measuring the base arc at all, as long as you determine your own base arc That's it. Second, pay attention to the material of contact lenses The materials of contact lenses are different, so we must pay special attention to the influence of good materials on the base arc. For example, now many people are willing to buy contact lenses made of silicone hydrogel, so it is more appropriate to float 0.2 arc above and below your own base arc, but if you choose the basic type of hydrogel contact lenses, Then the base arc should float about 0.3 above and below the base arc of its own. Third, it is critical to maintain balance. Everyone's eyeball base arc is different, so when we choose contact lenses, we must pay special attention to the overall measurement of the base arc. There are also many different types of contact lenses in China, and there are many styles of base arcs. If we want to choose suitable contact lenses, we can also directly purchase through the Internet, directly choose Johnson u0026 Johnson, Bausch u0026 Lomb and other contact lenses that are more suitable for Asians to wear, the base arc is more suitable for our daily wear.