AT	Aqueous tear
BAM	Brewster angle microscopy
DES	Dry eye syndrome
HA	Hyaluronic acid
HCEC	Human corneal epithelium cells
MAM	Membrane associated mucins
MAG	Muco-aqueous gel
MGD	Meibomian gland dysfunction
NAC	N-acetylcysteine
NIBUT	Non-invasive breakup time
SM	Secretory mucins
TF	Tear film
TFLL	Tear film lipid layer