With Kohkin technology
HOYA’s Hi-Vision Anti-Bacterial Coatings use Kohkin technology, which inhibits the proliferation of bacteria on the surface of the lens. The Anti-Bacterial Coating layer consists of silver ions known as AG+, which control bacterial growth. The positively charged silver ions (Ag+) possess the antimicrobial effect, penetrating the bacteria and changing the structure of the intracellular enzyme, thereby stopping bacterial function. This renders the bacteria unable to divide, thus bacterial growth is reduced.