|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|
It 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 microorganisms into the eye.
The conjunctiva is typically divided into three parts:
- Palpebral or tarsal conjunctiva: The conjunctiva lining the eyelids.
- Fornix conjunctiva: The conjunctiva where the inner part of the eyelids and the eyeball meet, the palpebral conjunctiva is reflected at the superior fornix and the inferior fornix to become the bulbar conjunctiva.
- Bulbar or ocular conjunctiva: The conjunctiva covering the eyeball, over the sclera. This region of the conjunctiva is bound tightly and moves with the eyeball movements.
Diseases and disorders
Disorders of the conjunctiva and cornea are a common source of eye complaints.
Conjunctival irritation is one of the adverse health effects that can take place after overexposure to VOCs (Volatile organic compounds).
- Medicinenet.com (1999). Conjunctiva. Retrieved July 25, 2004.
- MedEd at Loyola medicine/pulmonar/images/anatomy/eyeli.jpg
Sensory system - Visual system - Eye
|Fibrous tunic (outer)||Conjunctiva • Sclera • Schlemm's canal • Trabecular meshwork • Limbus |
Cornea (Epithelium, Bowman's, Stroma, Descemet's, Endothelium)
|Uvea (middle)||Choroid (Ciliary processes, Choriocapillaris, Bruch's membrane) • Iris (Stroma) • Pupil • Ciliary body|
|Retina (inner)||Macula • Fovea • Optic disc|
|Anterior segment||Anterior chamber • Aqueous humour • Posterior chamber • Lens|
|Posterior segment||Vitreous humour • Zonule of Zinn|
|Intraocular muscles||parasympathetic (Ciliary muscle, Iris sphincter muscle) • sympathetic (Iris dilator muscle)|
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