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.
These tears leave the eye through a small hole in the corner of the eye called the tear duct. Causes of watery eyes include: 1  Allergy to mold, dander, dust. 2  Blepharitis (swelling along the edge of the eyelid)  Blockage of the tear duct.