Bulbar ligneous conjunctivitis after pterygium removal in an elderly man

Ligneous conjunctivitis occurred unilaterally in a 74-year-old man after pterygium excision and only involved the bulbar conjunctiva. Histochemical studies confirmed the presence of mucopolysaccharides in the lesion sensitive to hyaluronidase. The patient was treated successfully with topical hyaluronidase and alpha-chymotrypsin, with no recurrence 20 months after cessation of therapy.