What is the typical effect of anti-reflective coating on glasses?

The correct answer highlights that anti-reflective (AR) coatings are designed to minimize reflections on the lenses. When these coatings are applied, they significantly reduce glare from sources like headlights and sunlight. This reduction in reflectivity makes the lenses appear clearer and less visible, allowing the wearer's eyes to be seen more clearly. This is particularly beneficial in photography, as it helps to avoid the distraction caused by reflections.

In contrast, options relating to enhancing color, scratch resistance, or darkening lenses outdoors are not accurate representations of the primary function of anti-reflective coatings. While these coatings serve many benefits, their most recognized and direct impact is on lens visibility and glare reduction.