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.
If not, you might: 1  Feel like you have sand or grit in your eye. 2  Have pain, especially when you open or close your eye. 3  Notice tearing and redness.  Become sensitive to 1  light. Have blurred vision.  Not be able to see.