Pterygium is a fibrovascular growth
of the conjunctiva extending across the limbus to invade the cornea at a
variable distance. The exposure to ultraviolet rays is a presumed a etiology and
hence it is more common in people in countries with hot cimate.
Surgical removal of the pterygium
is the permenant treatment; however recurrence is the main issue. Simple excision leads to high rates of recurrence which are reported to be as high as 89%. Free conjunctival autograft which was first described by Kenyon et al.
shows a low recurrence rate of 5.3%. Since then, many subsequent studies have
found this surgical technique to be safe and effective in reducing the number
of recurrences after pterygium surgery.
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