Linked from
The 9 pages that link to Tear film, each with the reason it gives.
CorneaRelated: It smooths the corneal surface and supports clear vision and epithelial health.
Corneal ulcerRelated: Its antimicrobial and lubricating functions help defend the cornea.
ConjunctivitisRelated: Tears may increase as the irritated conjunctiva responds to inflammation.
EyelidRelated: Each blink redistributes this protective layer across the eye.