Today, polarized glasses are universally recommended and recognised to be the best Sunglasses there are.
How do polarized glasses work?
Light rays reach us in one of 3 ways:
Diffused (by the atmosphere),
Reflected (by a light-coloured flat surface).
We naturally take precautions against direct light, but pay less attention to reflected light. Some light is reflected from any surface, but the amount increases when the reflecting surface is light coloured and reflective (like snow, sand or water).
Polarised lenses include a polarising film that can distinguish between different sorts of light, and only lets through light rays that don’t dazzle and are “useful” for vision.
It acts like a sort of Microscopic Venetian blind, eliminating glare by blocking just the irritating light rays.
Who should consider Polarized glasses?
Drivers irritated by dazzle from the dashboard, a wet road, other vehicles, etc.
People who enjoy outdoor sports (like skiing or water sports)
Spectacle wearers who have a reduced perception of contrast.
Anyone sensitive to bright light.
More generally, all who value their visual comfort.