The eyelids contain the Meibomian glands, which produce the lipid layer of the tear film.
When this function is disrupted:
tears evaporate faster
the eye becomes unstable
symptoms persist
Why Tears Alone Are Not Enough
This explains why many people::
use eye drops
but see no real improvement
because the issue is not just the quantity of tears,
but their stability
The Role of Microorganisms
An important factor that has gained attention in recent years is the presence of microorganisms such as Demodex, which naturally live on the eyelids but, when overgrown: