----UV+420cut technology filters out not only UVA&UVB, but also high-energy visible light(HEV light) of 400nm-420nm
---Latest reasearch has shown that blocking UV and HEV light is critical for protecting eyes against cataracts and age-related macular degeneration(AMD).
---We are still exposed to 60% of Ultraviolet rays on cloudy days and 20%-30% on rainy days. Oue blue cut lens can provide protection under all weathers.