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.
Many people visit the eye doctor with a common complaint: I feel like sand is in my eyes when I wake up in the morning.. They complain that their eyes hurt, itch, burn, or feel gritty as if a small piece of sand or particle is stuck in their eye.