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pterygium
(redirected from pterygia)

    Also found in: Medical, Encyclopedia 0.01 sec.
pte·ryg·i·um  (t-rj-m)
n. pl. pte·ryg·i·ums or pte·ryg·i·a (--)
An abnormal mass of tissue arising from the conjunctiva of the inner corner of the eye that obstructs vision by growing over the cornea.
[New Latin, from Greek pterugion, diminutive of pterux, pterug-, wing; see pterygoid.]
pte·rygi·al (-l) adj.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.pterygium - either of two thickened triangular layers of conjunctiva extending from the nasal edge of the eye to the corneapterygium - either of two thickened triangular layers of conjunctiva extending from the nasal edge of the eye to the cornea; it arises from irritation of the pinguecula
conjunctiva - a transparent lubricating mucous membrane that covers the eyeball and the under surface of the eyelid
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They include pterygia (abnormal fibrovascular tissue arising from the conjunctiva and extending onto the cornea, sometimes partially blocking vision and requiring surgery for removal), photokeratitis (temporary but painful inflammation of the cornea, also known as "snow blindness" and "welders' flash"), cataracts, and age-related macular degeneration (AMD) (1).
Ophthalmic sun smarts for runners by Gasch, Alice T. / AMAA Journal
Studies have shown that light rays entering the eye from the side are focused and intensified at the nasal limbus, where pterygia are most common, and the nasal lens cortex, the most likely site for cortical cataracts (1,2).
UV protection and contact lenses by Schnider, Cristina / Optometry Today
[6] Health care providers in North Carolina note that pterygia are seen among farmworkers.
Eye Symptoms and Use of Eye Protection Among Seasonal and Migrant ... by NORTON, DEBORAH / Southern Medical Journal
 
 
 
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