The primary underlying cause of dry eye is inadequate production of tears necessary to maintain the eye (s) in a healthy condition. (thebedlingtonterrierhealthgroup.webplus.net)
Decreased production of tears («dry eye») and / or premature evaporation of tears is almost always present. (ofora.com)
Oral administration of specific omega 6 essential fatty acids that contain sufficient amounts of gamma - linolenic - acid (GLA) are suggested to stimulate the natural production of tear - specific anti-inflammatory series one prostaglandins (PGE1). (drvitaminsolutions.com)