Bacterial Control

Keep bacteria at bay

Reducing bacteria growth by at least 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 harmful bacteria, HOYA introduces Hi-Vision 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 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 to both the front & back surfaces

A layer of Anti-Bacterial coating is applied to the front and back surface of the lens 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

Hi-Vision Anti-Bacterial coating is certified by The Society of International sustaining growth for Antimicrobial Articles (SIAA), which is the organisation to maintain rules to govern the quality and safety of antimicrobial treated products. The SIAA mark gives you strong assurance of the product's efficacy.

Upgrade to premium coatings to enjoy full protection

Hi-Vision Anti-Bacterial coating is available standard with Diamond Finish UV Control. It's also available with Diamond Finish UV Control + BlueControl for the ultimate in resistance to scratches and bacterial growth for your lenses; protection from UV light and for more relaxed vision when viewing digital devices. 

The eyeglass wearer will benefit from

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

Bacteria are unable to divide and bacterial growth is reduced

Difference between treated and untreated coatings on bacteria growth

Bacteria increase continuously on the lens surface

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

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

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