Comparison of the meibomian gland dysfunction in patients with chronic ocular graft-versus-host disease and Sjögren’s syndrome

AIM To investigate the abnormalities in the meibomian gland in patients with dry eye disease (DED) associated with chronic ocular graft-versus-host disease (coGVHD) in comparison with Sjogren's syndrome (SS), a major form of aqueous deficient DED and meibomian gland dysfunction (MGD), a common cause of evaporative DED.