A helmet visor is a protective shield or cover attached to a helmet that helps to shield the face and eyes from potential dangers or impacts. Full definition
The A-pillars give the glass a motorcycle helmet visor appearance, providing a sporty, aggressive presence lacking on some compact coupes. (automotive.com)
Veloster has distinctive black A-pillars that give the glass a motorcycle helmet visor appearance. (thekoreancarblog.com)
In other words, if I have both transparent helmet visor and eyeglass will save my eyes from bad rays? (mechanics.stackexchange.com)