Bacterial Control

Keep bacteria at bay

Reducing bacteria growth by at lesat 99.9%

Bacteria are all around us. Yours hands and spectacle lenses are no exception. Bacteria could be transferred from your hands to your lenses when you touch them, creating opportunities for transmitting bacteria and eye infections1.

About Bacterial Control
To protect users from harnful bacteria, HOYA introduces the anti-bacterial coating. It is a KOHKIN treated product that can prevent the proliferation of surface bacteria, which are proven to reduce bacteria growth by at least 99.9%2.

HOYA is even the first eyeglass lens manufacturer to register the above KOHKIN technology with SIAA, the Society of International Sustaining Growth for Antimicrobial Articles3, ensuring the lenses' safety, reliability and effectiveness.

Applied both front and back surface

Bacterial control applied anti-bacteiral coating layer on the front and back surface using silver iron known as AG+. It can reduce bacteria growth by at least 99.9% that can protect you in everyday life.



International standard certified

Bacterial Control is certified by The Society of International sustaining growth for Antimicrobial Articles (SIAA), which is the organization to maintain rules to govern the quality and safety of antimicrobial treated product. With its SIAA mark, it gives you strong assurance of the product.

Upgrade to premium coatings to enjoy full protection

You may choose to ungrade the bacterial control with Blue Control and UV Control to enjoy full protection from harmful bacteria and lights.

The eyeglass wearer will benefit from

Long-lasting antimicrobial effect

International standard certification

Full protection

Slowdown of bacterial growth by silver ions

The positively charged silver ions (Ag+) possess the antimicrobial effect

Ag+ penetrates the bacteria

Ag+ changes the structure of the intracellular enzyme and stops bacterial function

Bacterial is unable to divide and bacterial growth is reduced

Difference between treated and not-treated coatings on bacteria growth

Bacteria increase continously on the lens surface

Bacteria are completely killed or removed once. Nevertheless, the number of bateria will grow again from time to time

The growth of bateria is reduced by at least 99.9% for a long time of period

1.  2. Based on BOKEN quality evaluation institute's anti-bacterial activity value test results (Staphylococcus aureus and E.Coli) 3. Tested according to ISO 22196 and certified by The Society of International Sustaining Growth for Antimicrobial Articles (SIAA) standards