pterygium

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pterygium

 [tĕ-rij´e-um]
a winglike structure, especially an abnormal triangular fold of membrane in the interpalpebral fissure, extending from the conjunctiva to the cornea.
Pterygium. From Stein et al., 2000.
pterygium col´li webbed neck.

pte·ryg·i·um

(tĕ-rij'ē-ŭm),
1. A triangular patch of hypertrophied bulbar subconjunctival tissue, extending from the medial angle or canthus of the eye to the border of the cornea or beyond, with apex pointing toward the pupil. Synonym(s): web eye
2. Forward growth of the cuticle over the nail plate, seen most commonly in lichen planus. Synonym(s): pterygium unguis
3. An abnormal skin web.
[G. pterygion, anything like a wing, a disease of the eye, dim. of pteryx, wing]

pterygium

/pte·ryg·i·um/ (tĕ-rij´e-um) pl. ptery´gia   [Gr.] a winglike structure, especially an abnormal triangular fold of membrane in the interpalpebral fissure, extending from the conjunctiva to the cornea.
pterygium col´li  webbed neck; a thick skin fold on the side of the neck from the mastoid region to the acromion.

pterygium

(tə-rĭj′ē-əm)
n. pl. pteryg·iums or pteryg·ia (-ē-ə)
An abnormal mass of tissue arising from the conjunctiva of the inner corner of the eye that obstructs vision by growing over the cornea.

pte·ryg′i·al (-əl) adj.

pterygium

[tərij′ē·əm]
Etymology: Gk, pterygion, wing
a thick triangular patch of pale hypertrophied tissue that extends medially from the nasal border of the cornea to the inner canthus of the eye.
enlarge picture
Pterygium

pterygium

Ophthalmology A condition of older adults, characterized by a fleshy triangular fold of tissue that grows from the conjunctiva, encroaching on the cornea; it is clinically insignificant unless it affects the vision; it is usually on the nasal side, and may be bilateral Risk factors Exposure to sun and UV light, dust, sand, wind

pte·ryg·i·um

(tĕr-ij'ē-ŭm)
1. A triangular patch of hypertrophied bulbar subconjunctival tissue, extending from the medial canthus to the border of the cornea or beyond, with its apex pointing toward the pupil.
2. Forward growth of the cuticle over the nail plate, seen most commonly in lichen planus.
3. An abnormal skin web.
[G. pterygion, anything like a wing, a disease of the eye, dim. of pteryx, wing]

pterygium

A wing-shaped thickening of the CONJUNCTIVA that extends over the visible area of the white of the eye and across on to the CORNEA. Pterygium is common in tropical areas and is due to ultraviolet light damage from exposure to sunlight or to local corneal drying. Pterygium usually recurs following surgical removal. Also known as web-eye or duffir (Arabic).

pterygium 

A triangular fold of bulbar conjunctiva, in the interpalpebral fissure, with its apex advancing progressively towards the cornea, usually from the nasal side. A pinguecula often precedes its development. It is considered to be due to a degenerative process caused by recurrent dryness or irritation from wind and dust or prolonged exposure to sunlight, especially UV. It becomes more prevalent with age. Symptoms are usually absent unless the pterygium encroaches on the cornea and vision may then be affected: surgical intervention is then necessary. Some pterygia tend to recur after excision. UV absorptive lenses may help decrease the incidence (Fig. P21). See dellen; dyskeratosis; Stocker's line; pseudopterygium.
Fig. P21 Advanced case of pterygiumenlarge picture
Fig. P21 Advanced case of pterygium

pte·ryg·i·um

(tĕr-ij'ē-ŭm)
1. Triangular patch of hypertrophied bulbar subconjunctival tissue, extending from medial angle or canthus of eye to border of cornea or beyond, with apex pointing toward pupil.
2. Forward growth of the cuticle over the nail plate, seen most commonly in lichen planus.
[G. pterygion, anything like a wing, a disease of the eye, dim. of pteryx, wing]

pterygium

a winglike structure, especially an abnormal triangular fold of membrane in the interpalpebral fissure, extending from the conjunctiva to the cornea.
References in periodicals archive ?
Multiple pterygium syndrome (Escobar syndrome)-a case report.
Familial pterygium syndrome with probably dominant transmission linked to the X chromosome.
Several studies have been conducted on the use of amniotic membrane in ocular surface disorders, and this is now a well-established method of achieving re-epithelialisation in corneal ulcers and prevention of recurrence in cases of pterygium.
After that there have been many reports of applying amniotic graft in cases of pterygium with no recurrence.
In cases of pterygium, the rate of recurrence is unacceptably high for it to be used as a sole procedure.
Comparison of de- epithelialized amniotic membrane transplantation and conjunctivalautograft after primary pterygium excision.
The recurrence rate, which is the most common long-term complication of the pterygium surgery, is minimum in this technique and the visual acuity improvement occurs in quite a significant number of cases.
Pterygium surgery in Victoria: a survey of ophthalmologist.
A comparative study of recurrent pterygium surgery: limbal conjunctival autograft transplantation versus mitomycin C with conjunctival flap.
Inferior Limbal - Conjunctival autograft transplantation for recurrent pterygium.
Subconjuctivalmitomycin C as adjunctive therapy before pterygium excision.
Autologous cultivated conjunctival transplantation for pterygium surgery.