What we shoud know before we buy sunglasses?

[Odin Glasses]

In this hot summer, people often play for long hours on the beach without protection of their eyes, their proportioned eyes can develop the sunstroke reversible of the cornea. This painful state can have like consequence the provisional loss of vision.

So we should buy sunglasses to protect our eyes, these we all know, but what we should know before we buy our sunglasses?