title: Contact lens induced papillary conjunctivitis with silicone hydrogel lenses.
abstract: OBJECTIVE
  To describe the refitting of a soft lens wearer into a silicone hydrogel lens due to neovascularization. This change, in turn, caused contact lens induced papillary conjunctivitis (CLPC) and a further refitting was necessary.
  
  
  METHODS
  The patient was refit into a high Dk surface treated silicone hydrogel with a high modulus value. A second refitting was undertaken into a lower Dk silicone hydrogel contact lens with a lower modulus value which had no surface treatment but incorporated an internal wetting agent.
  
  
  RESULTS
  A high Dk/t lens was used to resolve existing neovascularization and chronic hyperaemia. Subsequently, CLPC response occurred, possibly due to a combination of factors, resulting in irritation of the palpebral conjunctiva. This resulted in temporary lens discontinuation. A second silicone hydrogel lens was fit, along with the use of a non-preserved care system, which led to improvement and eventual resolution of the condition.
  
  
  CONCLUSIONS
  High Dk silicone hydrogel lenses have shown excellent efficacy in resolving hypoxic complications such as neovascularization and hyperaemia. However, attention needs to be paid to their potential effect on the upper tarsal plate. More than one silicone hydrogel lens may be needed to help resolve these issues.
authors.affiliation: Centre for Contact Lens Research, School of Optometry, University of Waterloo, Ontario, Canada. gsorbara@uwaterloo.ca
authors.forename: L
authors.initials: L
authors.lastname: Sorbara
authors.forename: L
authors.initials: L
authors.lastname: Jones
authors.forename: D
authors.initials: D
authors.lastname: Williams-Lyn
mesh_terms: D000293:Adolescent; D002908:Chronic Disease; D003228:Conjunctiva; D003231:Conjunctivitis / Q000209:etiology*; D018639:Contact Lens Solutions / Q000737:chemistry; D003263:Contact Lenses, Hydrophilic / Q000009:adverse effects*; D005123:Eye / Q000098:blood supply; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D006940:Hyperemia; D009389:Neovascularization, Pathologic / Q000209:etiology; D011310:Preservatives, Pharmaceutical; D017755:Prosthesis Fitting; D012828:Silicones
chemical_list: D018639:Contact Lens Solutions; D011310:Preservatives, Pharmaceutical; D012828:Silicones; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate