Originally Posted by Cheyennes mom
aren't fly masks for keeping away flies.....
They also work as a form of sunglasses. They provide some UV protection for the eyes.
My mare wears a fly mask all year. She has lots of pink skin around her eyes (she is an appy with very appy eyes) and the vet suggested it would be best to protect them from the sun as much as possible to hopefully lower the future risk of certain types of cancer.