Bindehautsacks

Bindehautsacks refers to the conjunctival sac, the space between the eyelids and the eyeball. This sac is lined by the conjunctiva, a transparent mucous membrane. The conjunctiva extends from the edge of the cornea to the inner surface of the eyelids. The lower fornix of the conjunctival sac is the cul-de-sac formed where the palpebral conjunctiva (lining the eyelid) meets the bulbar conjunctiva (covering the eyeball). The upper fornix is similarly located. The conjunctival sac plays a vital role in lubricating the eye. It collects tears, which are produced by the lacrimal glands, and distributes them across the corneal surface. This distribution helps to keep the cornea moist, clear, and free of debris. The tears also contain antibacterial agents that help protect the eye from infection. When the eyelids are closed, the conjunctival sac is sealed, and the tears are held in place. Upon opening the eyes, the tears are spread by blinking. The conjunctival sac is also the site where medications, such as eye drops or ointments, are administered. They are typically placed in the lower fornix to allow for better retention and absorption. Inflammation of the conjunctiva, known as conjunctivitis or "pink eye," can affect this sac.