What is a primary purpose of lens coatings?

The primary purpose of lens coatings is to reduce glare and reflections. This is especially important for individuals who wear glasses, as excessive glare can impair vision and cause discomfort, particularly in bright environments or when using digital screens. Coatings such as anti-reflective (AR) coatings are designed specifically to minimize the amount of light reflecting off the surface of the lenses. By doing so, these coatings enhance visual clarity, improve contrast, and make it easier for wearers to see without distraction from reflections.

While enhancing lens durability and providing a stylish appearance are also valid aspects of lens coatings, they are secondary to the primary function of glare reduction. Coatings can make lenses more resistant to scratches or impact, and some may even enhance aesthetic qualities by adding a tint or mirror effect; however, these features serve more as supplementary benefits rather than the main purpose.