Debridement is a procedure that cleans up the lid margin. It removes keratin and debris from the openings of the meibomian (tear) glands which can obstruct the ability of the glands to secrete the oils needed by our tears. Keratin deposits can be a predisposing factor of blepharitis, which is excessive inflammation and debris around the eyelids. Debridement on its own has been shown to provide significant symptom relief and improved function of the tear glands. Combined with other treatments the technique can have a synergistic effect and is a key tool in dry eye management.