The international workshop on Meibomian Gland Dysfunction:
Report of the definition and Classification Subcommittee.
Invest Ophthalmol Vis Sci. 2011 Mar 30;52(4):1930-37.
J. Daniel Nelson, Jun Shimazaki, Jose M. Benitez-del-Castillo, Jennifer P. Craig, James P. McCulley, Seika Den, and Gary N. Foulks
Summary:
Recommended definition of MGD: Meibomian gland dysfunction (MGD) is a chronic, diffuse abnormality of the meibomian glands, commonly characterized by terminal duct obstruction and/or qualitative/quantitative changes in the glandular secretion. This may result in alteration of the tear film, symptoms of eye irritation, clinically apparent inflammation, and ocular surface disease.