The base curve of Asian eyeballs is between 8.4 and 8.6. A few people will be too large or too small. The smallest arc can reach 8.0, and the largest can reach 10.0. <br />Try to choose the base arc of color contact lenses which match the base curve of the eyeball. If the base curve is too large, it will be easy to slide. If the base curve is too small, wearers will feel tight. The service of measuring the base arc is generally available in a professional optical shop or an ophthalmic center, the base arc is an important data when buying color contacts
