The Adherence of Pseudomonas aeruginosa to Soft Contact Lenses

Salim I. Butrus, Stephen A. Klotz, Raghunath P. Misra

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


The adherence of Pseudomonas aeruginosa to extended-wear soft contact lenses (EWSCLs) may be an important initial step in the pathogenesis of EWSCL-associated infectious keratitis. P. aeruginosa tend to adhere more to worn EWSCLs than unworn EWSCLs (P < 0.05). Normal tear components such as aqueous solutions of albumin, lysozyme, and lactoferrin all significantly enhance adherence of P. aeruginosa to unworn EWSCLs often by as much as 300%. The presence of a 1 % solution of sialic acid in the bathing medium significantly reduces the adherence of P. aeruginosa to both unworn and worn lenses. Inhibition of bacterial adherence could also be achieved with the addition of mucin (which contains terminal sialic acid residues in its major sugar chains). Therefore, selective adherence by P. aeruginosa to a specific sugar (sialic acid) may be important in the initial attachment of the bacterium to soft contact lenses.

Original languageEnglish (US)
Pages (from-to)1310-1314
Number of pages5
Issue number10
StatePublished - 1987


  • Pseudomonas aeruginosa
  • adherence
  • contact lens
  • cornea
  • infectious keratitis

ASJC Scopus subject areas

  • Ophthalmology


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