[glass]

rayban prescription sunglasses
http://officialmyrtlebeach.com/rayban-sunglasses.html
The reasons why glare would be to be avoided and why it hurts your eyes is that it originate from reflections from the flat and smooth surfaces.

[Royalliecom]

best way to choose the corret one is to watch at least one video
for instance: https://www.youtube.com/watch?v=y163GB4exYY