¹_{External laboratories tests and internal technical tests in 2019. Combination here defined as the merger of 2 distinct criteria which are scratch resistance and smudge resistance - Crizal® Rock™ rated best on smudge resistance and equal on scratch resistance, compared to the most known lenses brands by consumers (MSW brand tracking 2018 in 17 countries). Scratch resistance may vary depending on lens configuration.} ²_{External laboratories tests and internal technical tests, among the most known lenses brands by consumers (MSW brand tracking 2018 in 17 countries).}  ³_{External laboratories tests and internal technical tests in 2019, among the most known lenses brands by consumers (MSW brand tracking 2018 in 17 countries).} ⁴_{External laboratories tests and internal technical tests in 2019. Combination here defined as the merger of 2 distinct criteria which are scratch resistance and smudge resistance - Crizal® Rock™ rated best on smudge resistance and equal on scratch resistance, compared to the most known lenses brands by consumers (MSW brand tracking 2018 in 17 countries). Scratch resistance may vary depending on lens configuration.}