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.
Eye pain that occurs deeper within the eye may feel aching, gritty, stabbing, or throbbing. This kind of eye pain may require more in-depth treatment, but it is rarely a sign of a larger, more serious condition.However, eye pain accompanied by vision loss may be a symptom of an emergency medical issue.ye pain is also known as ophthalmalgia. Depending on where you experience the discomfort, eye pain can fall into one of two categories: ocular pain (occurs on the eyeâs surface), and orbital pain (occurs within the eye).