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Tenon's capsule (/ t ə ˈ n oʊ n /), also known as the Tenon capsule, fascial sheath of the eyeball (Latin: vagina bulbi) or the fascia bulbi, is a thin membrane which envelops the eyeball from the optic nerve to the corneal limbus, separating it from the orbital fat and forming a socket in which it moves.
Spread of conjunctival SCC can occur in 1–21% of cases, with the first site of spread being the regional lymph nodes. [1] Mortality for conjunctival SCC ranges from 0–8%. [1] Diagnosis is often made by biopsy, as well as CT (in the case of invasive SCC). Treatment of conjunctival SCC is usually surgical excision followed by cryotherapy. [1]
Palpebral or tarsal conjunctiva Lines the eyelids Bulbar or ocular conjunctiva Covers the eyeball, over the anterior sclera: This region of the conjunctiva is tightly bound to the underlying sclera by Tenon's capsule and moves with the eyeball movements. The average thickness of the bulbar conjunctival membrane is 33 microns. [2] Fornix conjunctiva
Macrocystic have cysts greater than 2 cubic centimetres (0.12 cu in), and microcystic lymphatic malformation have cysts that are smaller than 2 cubic centimetres (0.12 cu in). [ 2 ] These malformations can occur at any age and may involve any part of the body, but 90% occur in children less than 2 years of age and involve the head and neck.
Advanced conjunctival carcinoma protruding through the palpebral fissure. Conjunctival Kaposi's sarcoma [12] Epibulbar dermoid [13] Malignant conjunctival tumors [14] Lymphoma of the conjunctiva [15] Melanoma and PAM with atypia [16] Pigmented conjunctival tumors [17] Pingueculum [18] Pterygium [19] Squamous carcinoma and intraepithelial ...
Chronic conjunctivitis (e.g. trachoma) and aging factor are two causes of conjunctival concretion, which will make the conjunctiva cellular degeneration to produce an epithelial inclusion cyst, filled with epithelial cells and keratin debris. After calcification, the conjunctival cyst hardens and forms a conjunctival concretion. Congenital ...
The resulting loose, excess conjunctiva may mechanically irritate the eye and disrupt the tear film and its outflow, leading to dry eye and excess tearing. [2] A correlation may also exist between inflammation in the eye and conjunctivochalasis, though it is unclear whether this correlation is causal.
It is thought to be the result of congenital errors of lymphatic development occurring prior to the 20th week of gestation. [2] Lymphangiomatosis is a condition marked by the presence of cysts that result from an increase both in the size and number of thin-walled lymphatic channels that are abnormally interconnected and dilated.