Lacrimal lake
Encyclopedia
The lacrimal lake is the pool of tears
Tears
Tears are secretions that clean and lubricate the eyes. Lacrimation or lachrymation is the production or shedding of tears....

 in the lower conjunctiva
Conjunctiva
The conjunctiva covers the sclera and lines the inside of the eyelids. It is composed of rare stratified columnar epithelium.-Function:...

l cul-de-sac, which drains into the opening of the tear drainage system (the puncta lacrimalia). The volume of the lacrimal lake has been estimated to be between 7 and 10 µL.

Although the lacrimal lake usually contains 7-10 µL of tears, the maximum fluid it can usually hold is 25-30 µL before tearing occurs. Aging usually causes the eyelids to become more loose which in turn enables the lacrimal lake to hold even more fluid.

The lacrimal papilla is an elevation located on the medial canthus
Canthus
The Canthus is either corner of the eye where the upper and lower eyelids meet.Canthus may also refer to:* Canthus of the eye, also called the orbital canthus* Canthus , the sides of the snout in reptiles in amphibians...

where the punctum is found.
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