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.
Allergic conjunctivitis causes red, watery, itchy or gritty eyes. The condition is not usually painful and does not make eyes sensitive to light. It does not affect vision. The most common cause is an allergy to pollen in the hay fever season.llergic conjunctivitis causes red, watery, itchy or gritty eyes. The condition is not usually painful and does not make eyes sensitive to light. It does not affect vision. The most common cause is an allergy to pollen in the hay fever season.