title: [Supposed nylon allergy after cataract surgery].
abstract: METHODS
  We present the case of a patient operated on for extracapsular cataract extraction of both eyes. Three weeks after the first operation (right eye), the patient presented a local inflammatory reaction at the incision site which was characterized by the existence of whitish exudates of different sizes surrounding the nylon suture. At one week of the second operation, the patient presented the same alteration (left eye), although it was observed sooner and had a greater intensity. The allergy skin tests for nylon and other substances were negative, however the local inflammatory reaction disappeared when the nylon suture was removed.
  
  
  CONCLUSIONS
  This type of reaction, which we have observed in several other patients, has been previously described by others authors, although no clearly established cause has been demonstrated. Both toxicity and allergy to nylon have been proposed as the underlying mechanisms. We consider that a type IV hypersensitivity reaction to nylon may be the underlying mechanism of these reactions although toxicity cannot be ruled out.
authors.affiliation: Hospital Central de la Cruz Roja San José y Santa Adela, Madrid, España.
authors.forename: I
authors.initials: I
authors.lastname: Elosúa de Juan
authors.forename: S
authors.initials: S
authors.lastname: López García
authors.forename: M
authors.initials: M
authors.lastname: Bové Guri
authors.forename: E
authors.initials: E
authors.lastname: Mata Díaz
authors.forename: J
authors.initials: J
authors.lastname: Martínez Garchitorena
mesh_terms: D002387:Cataract Extraction; D004342:Drug Hypersensitivity / Q000209:etiology*; D005122:Exudates and Transudates; D006801:Humans; D007634:Keratitis / Q000209:etiology*; D016850:Limbus Corneae / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009757:Nylons / Q000009:adverse effects*; D011183:Postoperative Complications / Q000209:etiology*; D013537:Sutures
chemical_list: D009757:Nylons