The National Motor Freight ClassificationÂ®. The National Motor Freight ClassificationÂ® (NMFCÂ®) is a standard that provides a comparison of commodities moving in interstate, intrastate and foreign commerce. It is similar in concept to the groupings or grading systems that serve many other industries.
Dry eyes Symptoms of dry eyes include a gritty sensation, pain, light sensitivity, eye redness, burning, and stinging. Sjogren's syndrome Sjogren's syndrome is an autoimmune disorder that most often causes dry eyes and dry mouth.
How Watery Eyes Are Diagnosed and Treated. You may be able to figure out the cause of your watery eyes on your own: 1  If your eyes feel dry, raw, and uncomfortable just before they begin to water, you are probably experiencing dry eye syndrome.  If your eyes are itchy and swollen, allergies are the likely culprit.