Crypts of Henle are microscopic pockets found in scattered sections of the conjunctiva around the eyeball.
They are responsible for secreting mucin, a proteinous substance that makes up the inner layer of tears.
It coats the cornea to provide a hydrophilic layer that allows for even distribution of the tear film.
Another anatomical structure called the glands of Manz perform a similar function.
They are located in the eyeball's conjunctiva, arranged in a ring around the cornea, near the scleral junction.