The condition is not cancerous and does not invade the inside of the eye or spread to any other part of the face or body. It can look red and be mildly irritating. In this situation, surgical treatment may be required. Pterygia may grow back despite successful surgery. A pterygium is usually painless, though it can cause irritation to the eye at any stage. The tissue is often triangular, pink and fleshy.
Fine blood vessels may be visible. If symptoms do occur, they may include:. Protection of your eyes from the ultraviolet radiation in sunlight is always important. Wearing UV-protecting sunglasses and a wide brimmed hat may be beneficial in preventing the start or progression of a pterygium.
An optometrist or ophthalmologist can confirm the diagnosis with a special microscope used to magnify the view of the eye. If you think you have a pterygium, you should see your GP doctor , or specialist ophthalmologist or optometrist. Hirst, Lawrence W. The treatment of pterygium. Surv Ophthalmol.
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Am J Ophthalmol. Fibrin glue versus sutures for attaching the conjunctival autograft in pterygium surgery : a prospective observer masked clinical trial. Todani A, Melki SA. Pterygium: current concepts in pathogenesis and treatment. Acute scleral thinning after pterygium excision with intraoperative mitomycin C: a case report of scleral dellen after bare sclera technique and review of the literature. Prevalence of pinguecula and pterygium in a general population in Spain.
Pterygium in aged population in Doumen County, China. Yan Ke Xue Bao. About Foundation Museum of the Eye. Nov Pterygium - Europe. Higher incidence is associated with chronic sun exposure ultraviolet light , older age, male sex, and outdoor activity Liu et al, Pterygium are benign not malignant tumors. Hence pterygium do not invade the eye, sinuses or brain. Pterygium do not spread to other parts of the body metastasize.
Pterygium are external to the eye, visibly apparent, and typically noted to grow before they cause symptoms. They can become irritated, causing an itchy, burning sensation. If allowed to grow into the line of vision pupillary axis , then a pterygium can cause impairment of vision. Pterygium is usually diagnosed based on appearance. Other explanations, such as Elliot's TNTF theory, 33 should be evaluated, with experiments performed to study abnormalities in tear composition in patients with pterygia, and their possible role in pterygium pathogenesis.
Such studies would be important not only in understanding the origin of the nasal preference, but also, more generally, in the analysis of pathogenesis of pterygia. The authors thank Richard J. Braun, PhD, and Jan P. Bergmanson, PhD, for their expert advice on our study. Disclosure: P. King-Smith, None; T. Mauger, None; C. Begley, None; P. Tankam, None. The pathogenesis of pterygium: Current concepts and their therapeutic implications.
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