Not sure if ever heard of this, but there are glasses specifically created to protect our dog from ultra violet rays especially for those dogs that accompany their owners to ski.
The truth is that currently there is not any scientific studies showing the damage that ultraviolet rays can do to our dog, but if we extrapolate how damaging are these rays to humans, especially in snowy areas, it is logical to think that the same damage would occur in our dogs.
Apparently members of the army and owners of German shepherds would have seen as two of its agents K9 suffered eye damage caused by ultraviolet rays. That is why they ensure that protective goggles would have been of special importance in their high mountain missions.
There are several models of these glasses, we have brought from Amazon to you, just check it on Amazon site: