Endophthalmitis after cataract surgery: risk factors relating to technique and events of the operation and patient history: A retrospective case-control study1
Section snippets
Materials and methods
The material was abstracted from the computerized patient file system of the Eye Clinic of St Eriks Hospital in Stockholm, Sweden. The study period comprised 47 months from February 1990 (i.e., from the very opening of the clinic) through December 1993. In this time, a total of 22,091 procedures were performed (Table 1). This time span marked a transition in technique from ECCE to Phaco and an increasing use of silicone and heparin surface-modified (HSM) polymethylmethacrylate (PMMA)
Results
Fifty-seven patients with endophthalmitis after cataract surgery were diagnosed, equaling an overall rate of 0.26% Table 1, Table 2, Table 3. Approximately 75% of the cases were culture-proven. The median delay between the operation and admission for diagnosis and treatment was 6 days (range, 1 day–31 months). In 75.5% of the cases, hospitalization occurred within 10 days, and in another 19.2%, hospitalization occurred between the 11th and 29th day after the cataract operation. Few variables
Discussion
The purpose of this study was to identify endophthalmitis risk factors relating to patient history and, above all, to technical aspects of the cataract operating procedure. The general goals for technique alterations in cataract surgery are to improve the visual rehabilitation and to enhance patient safety. The Phaco procedure has, by and large, achieved these goals with an improved control over important postoperative complications such as induced astigmatism8, 9 and inflammation.10, 11 So
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None of the authors has any propriety interest in the medical devices discussed in the article.