April 2009
Volume 50, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2009
The Annual Incidence Rate of Reported Endophthalmitis After Cataract Surgery in Quebec From 1996-2005
E. Freeman; M.-H. Roy-Gagnon; E. Fortin; D. Gauthier; M. Popescu; H. Boisjoly
Author Affiliations & Notes
  • E. Freeman
    Ophthalmology,
    University of Montreal, Montreal, Quebec, Canada
    Research Center, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
  • M.-H. Roy-Gagnon
    Social and Preventive Medicine,
    University of Montreal, Montreal, Quebec, Canada
    Research Center, Sainte Justine Hospital, Montreal, Quebec, Canada
  • E. Fortin
    Ophthalmology,
    University of Montreal, Montreal, Quebec, Canada
  • D. Gauthier
    Ophthalmology,
    University of Montreal, Montreal, Quebec, Canada
  • M. Popescu
    Research Center, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
  • H. Boisjoly
    Ophthalmology,
    University of Montreal, Montreal, Quebec, Canada
    Research Center, Maisonneuve-Rosemont Hospital, Montreal, Quebec, Canada
  • Footnotes
    Commercial Relationships  E. Freeman, None; M.-H. Roy-Gagnon, None; E. Fortin, None; D. Gauthier, None; M. Popescu, None; H. Boisjoly, None.
  • Footnotes
    Support  Fonds de Recherche en Ophtalmologie de l’Université de Montréal
Investigative Ophthalmology & Visual Science April 2009, Vol.50, 3552. doi:
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      E. Freeman, M.-H. Roy-Gagnon, E. Fortin, D. Gauthier, M. Popescu, H. Boisjoly; The Annual Incidence Rate of Reported Endophthalmitis After Cataract Surgery in Quebec From 1996-2005. Invest. Ophthalmol. Vis. Sci. 2009;50(13):3552.

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Abstract

Purpose: : To estimate the annual incidence rate and risk factors for endophthalmitis after cataract surgery from 1996-2005 in the province of Quebec, Canada.

Methods: : De-identified data were obtained from an outpatient physician billing database (Régie de l’assurance maladie du Québec)(RAMQ) on all cases of cataract surgery (procedural code=07261) that occurred in the province of Quebec, which has a single-payer, universal health care system, during the years 1996-2005. For this cohort, records of an International Classification of Disease 9 code for endophthalmitis (ICD-9=360.0) from 1996-2005 were requested from two sources: the RAMQ outpatient database and an inpatient billing database (MEDECHO). Endophthalmitis after cataract surgery was assumed if it occurred within 90 days of the cataract surgery. Those who had a trabeculectomy or corneal transplant within 90 days of cataract surgery and those who had cataract surgery after September 30, 2005 were excluded. Risk factors were examined using chi-square tests and logistic regression.

Results: : After exclusions, 490,690 cataract surgeries were performed in the province of Quebec between 1996-2005. There were 754 cases of endophthalmitis that occurred for an overall incidence rate of 0.15% (1.5 per 1000). Factors associated with endopthalmitis included age≥85 (adjusted odds ratio (OR)=1.36, p=0.01), male gender (OR=1.44, p<0.01), surgery from 2003-05 vs 1996-2002 (OR=0.67, p<0.01), and region of cataract surgery as the Montréal-Centre (OR=3.01, p<0.01) and Côte Nord (OR=4.59, p<0.01) regions had higher rates compared to all other regions of Quebec.

Conclusions: : The risk of reported endophthalmitis decreased after 2002 from 2003-05. Reasons to explain this decrease should be explored and further research should be done to understand why certain patients have higher risks of endophthalmitis after cataract surgery.

Keywords: endophthalmitis • clinical (human) or epidemiologic studies: prevalence/incidence 
© 2009, The Association for Research in Vision and Ophthalmology, Inc., all rights reserved. Permission to republish any abstract or part of an abstract in any form must be obtained in writing from the ARVO Office prior to publication.
Copyright © 2025 Association for Research in Vision and Ophthalmology.
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