May 2005
Volume 46, Issue 13
ARVO Annual Meeting Abstract  |   May 2005
Silicone Punctal Plugs and the Ocular Microbial Flora
Author Affiliations & Notes
  • S.H. Soukiasian
    Department of Ophthalmology, Lahey Clinic, Burlington, MA
    Tufts University School of Medicine, Boston, MA
  • N. Bhardwaj
    Department of Ophthalmology, Lahey Clinic, Burlington, MA
  • Footnotes
    Commercial Relationships  S.H. Soukiasian, None; N. Bhardwaj, None.
  • Footnotes
    Support  None.
Investigative Ophthalmology & Visual Science May 2005, Vol.46, 5088. doi:
  • Views
  • Share
  • Tools
    • Alerts
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      S.H. Soukiasian, N. Bhardwaj; Silicone Punctal Plugs and the Ocular Microbial Flora . Invest. Ophthalmol. Vis. Sci. 2005;46(13):5088.

      Download citation file:

      © ARVO (1962-2015); The Authors (2016-present)

  • Supplements

Abstract: : Purpose: We have previously reported the high incidence OF pathogenic noncomensals, including Ps. auroginosa (37%) from explanted silicone punctal plugs (ARVO 2004). We now describe the microbial flora from explanted punctal plugs(P) and compare them with those of the lid margin(LM) and conjunctiva(C). Methods: Semiquantitative cultures were performed from explanted punctal silicone plugs, lid margin and inferior bulbar conjunctiva from 16 symptomatic patients. Results:Positive cultres were obtained from 13 of 16 patients (81%). 7/13(54%) were polymicrobial. Of the 49 positive isolates from all 3 sites, 25 were from P, 15 from L, and 9 from C. In only 6 cases (12%) was on organism found on a site other then the punctal plug (with 4 being "rare" coag. negative staph.) In nearly all cases, the colony counts were semi quantitatively higher on the punctal plug. Noncomensal pathogenic organisms were always found on the punctal plug (Serratia 3(23%), Strenotrophomonas 2(15%), Hemphilus sp. 2(13%), Klebsiella 1(8%), E. coli 1(8%). Conclusions: Pathogenic organisms can colonize silicone punctal plugs by the potential formation of biofilm, may modify the microbial flora of the lid margin and/or conjunctiva, and may play a pathogenic role on the ocular surface. </td> </tr> <TR>

Keywords: microbial pathogenesis: clinical studies • cornea: tears/tear film/dry eye • microbial pathogenesis: clinical studies 

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.