It's not caused by the environment, but by the eye's wherewithal to produce enough tears.
Everything is related, and the lack in an area might easily show up in an individual you believe unrelated fashion. http://Figgardenpacking.com/__media__/js/netsoltrademark.php?d=Www.Opticaljournal.com%2Fanti-aging-cream-and-dry-eye%2F