What does the use of a helmet visor enhance?

The use of a helmet visor primarily enhances protection to the eyes and face from debris and sun glare. A visor serves as a shield, blocking harmful elements that may pose a risk during various activities, such as cycling, motorcycling, or other helmeted sports. By preventing dust, dirt, and small projectiles from reaching the eyes, a visor contributes significantly to the overall safety and comfort of the helmet wearer. Additionally, visors can help reduce glare from the sun, which can be crucial for maintaining visibility in bright conditions.

This focus on eye protection is fundamental in scenarios where wearers are exposed to potential hazards while needing clear vision, making this an essential feature for enhancing safety. Other options may address comfort, aerodynamic efficiency, or stability, but they do not capture the key protective function that a visor is designed to offer.