Preferred Label : tear film;
Uberon definition : An aqueous substance that covers the anterior surface of the eyeball, keeping the
cornea wet.;
Uberon synonym : precorneal film;
Uberon Function note : maintenance of the avascular transparent corneal epithelium;
Uberon Structure note : The tear film is structurally complex with three distinct layers: a surface lipid
layer, a middle aqueous layer, and an inner mucus layer[http://physiologyonline.physiology.org/content/13/2/97];
Origin ID : 0022287;
composed primarily of
- part of
- surrounded by
An aqueous substance that covers the anterior surface of the eyeball, keeping the
cornea wet.
