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Standardized meibomian gland expression performed at the slit lamp using a diagnostic expression instrument (Korb and Blackie52). See text for further details (courtesy of D. Korb). Reprinted with permission from Korb DR, Blackie CA. Meibomian gland diagnostic expressibility: correlation with dry eye symptoms and gland location. Cornea. 2008;27(10):1142–1147.
