Colorado's high altitude and abundant sunshine contribute to increased ultraviolet light exposure. This can have implications for dog health, particularly in relation to a condition known as pannus.

Pannus, or chronic superficial keratitis, is an immune-mediated disease that can be aggravated by UV exposure. Certain breeds are more commonly affected, including German shepherds and greyhounds.

Further details about pannus and its effects on dogs are available from the Glenwood Springs Post Independent, which has published a column on the topic of ultraviolet light and dog eyes.