The tear film has 3 layers: mucous (from cells on the white part of your eye), aqueous (watery tears made by your lacrimal gland and accessory glands), and oil layer (created by glands inside your eyelids called meibomian glands).
These 3 layers contribute to overall health of the tear film. Other things that contribute are:
1.) How much inflammation is seen in your eyes?
2.) Do you have an underlying systemic (bodily) condition tha...