Conjunctiva
| 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.) | |
| Details | |
| Artery | lacrimal artery, anterior ciliary arteries |
| Nerve | lacrimal nerve |
| Identifiers | |
| MeSH | D003228 |
| TA98 | A15.2.07.047 |
| TA2 | 6836 |
| FMA | 59011 |
| Anatomical terminology | |
The conjunctiva is a clear membrane that covers the sclera (white part of the eye) and lines the inside of the eyelids. it is made of lymphoid tissue
Function
It helps lubricate the eye by producing mucus and tears, although a smaller volume of tears than the lacrimal gland.[1] 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:
- 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.
The surface of the eye is exposed to various external influences and is especially suspectible to trauma, infections, and allergic reactions.
The conjunctiva is best known because of its inflamed state, conjunctivitis (more commonly known as pinkeye).
Conjunctival irritation is one of the adverse health effects that can take place after overexposure to VOCs (Volatile organic compounds).
See also
Additional images
-
Sagittal section through the upper eyelid.
References
- ^ London Place Eye Center (2003). Conjunctivitis. Retrieved July 25, 2004.
External links
- Medicinenet.com (1999). Conjunctiva. Retrieved July 25, 2004.
- MedEd at Loyola medicine/pulmonar/images/anatomy/eyeli.jpg
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| Uvea / vascular tunic (middle) |
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| Retina (inner) |
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| Anatomical regions of the eye |
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