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.
By Mayo Clinic Staff. Watery eyes can be due to many factors and conditions. In infants, persistent watery eyes, often with some matter, are commonly the result of blocked tear ducts. The tear ducts don't produce tears, but rather carry away tears, similar to how a storm drain carries away rainwater.