What does the term "lens coating" refer to?

The term "lens coating" refers to the application of additional layers on lens surfaces to enhance their performance. These coatings can serve various purposes, such as reducing glare, improving scratch resistance, providing anti-reflective properties, and offering UV protection. By adding these coatings, lenses can significantly improve vision quality and comfort for the wearer. For example, an anti-reflective coating helps to minimize reflections on the lens, which is particularly beneficial for night driving or for those who work on computers. Thus, the concept of lens coating is fundamentally about enhancing functionality rather than aesthetics or physical characteristics like color or thickness.