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Their ducts unite into a rather long sinus which open into the fornix conjunctiva. [2] There are approximately forty Krause glands in the region of the upper eyelid, and around 6 to 8 in the region of the lower lid. [2] The function of these glands are to produce tears which are secreted onto the surface of the conjunctiva.
[3] 20 to 40 glands of Krause are found in the upper fornix, and 6-8 glands appear in the lower fornix. [4] There are usually 2 to 5 Ciaccio's glands, and are found along the superior tarsal border of the upper eyelid. [1] Popov’s glands are located within the substance of the caruncle. [1]
Conjunctival concretions are generally asymptomatic.Common symptoms include eye discomfort, eye irritation, and foreign body sensation. Sometimes, the larger, harder or multiple concretions make the rubbing off of the superficial layers of the conjunctiva or eyelids to cause conjunctival abrasion, especially prominent when blinking.
The lacrimal gland is a compound tubuloacinar gland, it is made up of many lobules separated by connective tissue, each lobule contains many acini.The acini composed of large serous cells which, produce a watery serous secretion, serous cells are filled with lightly stained secretory granules and surrounded by well-developed myoepithelial cells and a sparse, vascular stroma.
First drawing of the meibomian gland by Heinrich Meibom.Year 1666. The glands were mentioned by Galen in 200 AD [3] and were described in more detail by Heinrich Meibom (1638–1700), a German physician, in his work De Vasis Palpebrarum Novis Epistola in 1666.
Diagnosis can be further made under a slit lamp upon the observation of redundant conjunctival folds. These folds can be made more apparent by staining with fluorescein dye and by applying gentle upward pressure with a finger to the eyeball through the lower lid. In pure aqueous tear deficiency dry eye patients, fluorescein stains in the ...
The lacrimal lake is the pool of tears in the lower conjunctival cul-de-sac, which drains into the opening of the tear drainage system (the puncta lacrimalia). [1] The volume of the lacrimal lake has been estimated to be between 7 and 10 μL.
Fornix (pl.: fornices, Latin for "arch") can refer to: Fornix or throat scale, a bowed prolongation of the corolla in Boraginaceae ; Fornix of the brain; Fornix conjunctiva, a part of the conjunctiva; Fornix vaginae, also called the vaginal fornix; An early type of Roman triumphal arch