A special mask with luxurious surface treatment with UV420 lens installed
- Attained extreme finish of aluminium frame.
- The multilayer coating on the surface of tempered lens cuts wavelengths of blue through ultraviolet region from approximately 420 nm.
- It is widely known that light rays with ultraviolet rays of 380 nm or less are harmful for the eyes and the skin. However, recently it has become apparent that light rays in the wavelength range between 420 nm and 380 nm within the visible ray also cause deterioration and diseases of eyes, such as oxidative stress and reduction of lutein. For that reason, cuts in this wavelength range is now recommended every where including spectacle lens manufacturers.