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Related to pterygia: pinguecula, multiple pterygium syndrome


A triangular mass of mucous membrane growing on the conjunctiva, usually near the inner canthus.
Overgrowth of the cuticle forward on the nail.
(vertebrate zoology)
A generalized vertebrate limb.



a disease of the conjunctiva of the eye in man and animals, characterized by formation of a conjunctival fold of the sclera that gradually grows on the surface of the cornea and becomes united with it. In man, pterygium is generally caused by prolonged exposure to strong wind, dust, or chemical irritants. The disease develops in the interpalpebral fissure, usually on the nasal side, in the form of a triangle whose base lies on the sclera. If the pterygium reaches the cornea’s optic zone, vision is reduced. The disease is treated surgically.

References in periodicals archive ?
This would provide data on the level of pterygia in the worker population.
Mackenzie FD, Hirst LW, Battistutta D, et al: Risk analysis in the development of pterygia.
10) Pterygia may cause irritation with concomitant tearing that female patients have found problematic.
Mackenzie FD, Hirst LW, Battistutta D, Green A: Risk analysis in the development of pterygia.
A 1-year cut-off was chosen for follow-up because recurrence of pterygia is most likely to occur within 6 - 12 months postoperatively.
The pterygia recurrence rates of the two groups at 1-year follow-up were (i) SCC group: 66.
The SCC method had a significantly higher recurrence rate of pterygia (66.
Size could not be regarded as a significant predictor of recurrence, as recurrence was similar for smaller (<4 mm) and more severe ([greater than or equal to] 4 mm) pterygia.
The study will evaluate the safety and preliminary efficacy of a three-month course of treatment with ISV-120 following surgical removal of pterygia.
A previous Phase II study demonstrated that ISV-120 was safe and had the potential to prevent pterygia recurrence over the 30-day dosing period," said Kumar Chandrasekaran, Ph.
Since pterygia are highly vascularized growths, ISV-120 may be able to stop recurrence by "starving" the pterygia of their blood source.