2022年11月2日 · Your tear system (lacrimal apparatus) is a network of glands, sacs and ducts around your eyes. It makes new tears and drains old ones out of your eyes. Dry or watery eyes are the most common symptom of something interfering with your tear system.

The lacrimal apparatus is the physiological system containing the orbital structures for tear production and drainage. [1] The lacrimal gland, which secretes the tears, and its excretory ducts, which convey the fluid to the surface of the eye; it is a j …

2023年7月12日 · The function of the lacrimal apparatus is to produce tears, channel them to the surface of the eye where they maintain moisture, and flush debris and waste material from the ocular surface. The control of tears is under a multitude of inputs and sensory responses.

2023年8月8日 · The lacrimal duct system transmits tears from the surface of the eye to the nasal cavity. Tears enter the duct system at the lacrimal punctae and conduct through canaliculi within the eyelids. The canaliculi drain into the lacrimal sac.

2025年1月22日 · It includes both the secretory structures that produce tears and the excretory pathways that drain them. The major components are the lacrimal gland, lacrimal puncta, lacrimal canaliculi, lacrimal sac, and nasolacrimal duct. Below is a detailed description of each part of the lacrimal apparatus.

2023年10月30日 · The lacrimal gland (tear gland) is an exocrine gland located above the eyeball, in the anterior part of the upper outer aspect of each orbit. It secretes lacrimal fluid (tear fluid), a watery fluid isotonic to plasma, onto the surface of the eyeball.

2024年5月1日 · The lacrimal system provides the ocular surface with the necessary fluid for lubrication, both for optimising the optical properties of the precorneal tear film and protecting the eye from foreign bodies, viral and microbial infection. A sophisticated system balances the amount of fluid production and drainage.

2018年9月23日 · The lacrimal glands are serous type exocrine glands that secrete lacrimal fluid onto the surfaces of the conjunctiva and cornea of the eye. Lacrimal fluid acts to the clean, nourish and lubricate the eyes. It forms tears when produced in excess.

The Lacrimal System refers to the anatomical structures involved in the production, distribution, and drainage of tears, including the lacrimal gland, tear ductules, lacrimal sac, and nasolacrimal duct.

2020年11月12日 · The lacrimal system is made up of both the lacrimal secretory system and the nasolacrimal drainage system. The secretory system consists of the glands that make up the tear film (the lacrimal gland, the accessory glands of Krause and Wolfring, and the meibomian glands).