Conjunctiva The upper half of a sagittal section through the front of the eyeball. (Label for 'Conjunctiva' visible at center-left.) Horizontal section of the eyeball. (Conjunctiva labeled at upper left.) Gray's subject #227 1026 Artery lacrimal artery, anterior ciliary arteries Nerve supratrochlear nerve MeSH Conjunctiva
The conjunctiva helps lubricate the eye by producing mucus and tears, although a smaller volume of tears than the lacrimal gland. It also contributes to immune surveillance and helps to prevent the entrance of microbes into the eye.
The conjunctiva is typically divided into three parts:
Part Area Palpebral or tarsal conjunctiva lines the eyelids Bulbar or ocular conjunctiva covers the eyeball, over the sclera. This region of the conjunctiva is tightly bound to the underlying sclera by Tenon's capsule and moves with the eyeball movements. Fornix conjunctiva Forms the junction between the bulbar and palpebral conjunctivas. It is loose and flexible, allowing the free movement of the lids and eyeball. .
The conjunctiva consists of nonkeratinized squamous epithelium.
Diseases and disorders
Disorders of the conjunctiva and cornea are a common source of eye complaints.
Conjunctival irritation can occur for a wide variety of reasons including dry eye and overexposure to VOCs (Volatile organic compounds).
- Medicinenet.com (1999). Conjunctiva. Retrieved July 25, 2004.
- MedEd at Loyola medicine/pulmonar/images/anatomy/eyeli.jpg
Head and neck anatomy – accessory visual structures (TA 15.2.7, TH H3.11.08.6, GA 10.1021) Eyelid Lacrimal apparatus Other
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