Topview Eyewear

Photochromic lenses are eyeglass lenses that are clear (or nearly clear) indoors and darken automatically when exposed to sunlight. Other terms sometimes used for photochromic lenses include "light-adaptive lenses," "light intelligent" and "variable tint lenses."Because of this, some people — including some eye care practitioners — refer to photochromic lenses as "transitions lenses" or "transition lenses."  How photochromic lenses work: The molecules responsible for causing photochromic lenses to darken are activated by the sun's ultraviolet radiation. Because UV rays penetrate clouds, photochromic lenses will darken on overcast days as well as sunny days. Photochromic lenses typically will not darken inside a vehicle because the windshield glass blocks most UV rays. Recent advancements in technology allow some photochromic lenses to activate with both UV and visible light, providing some darkening behind the windshield. Ask your o...

We are the first eyewear factory local in shenzhen that obtain ISCC Plus certification, we are licensed that allow to use sustainable or recycled raw materials for the production of eyewear products. ISCC Plus is part of the ISCC (International Sustainability & Carbon Certification) scheme. This voluntary scheme allows companies along the supply chain to monitor and demonstrate the sustainability of their products through the verification of sustainability, traceability and mass balance requirements. Topview Eyewear was certified as Processing Unit. Processing units are facilities that transform input materials by changing their physical and/or chemical characteristics. The audit of a processing unit covers the relevant requirements for its management system, traceability and supply chain. We got the certification on 31st January 2022. thus qualified for the Acetate Renew program from Italian acetate producer Mazzucchelli and U.S. chemical specialist Eastman. Sustainability is the ...