Influence of intraocular lens material on the development of acute endophthalmitis after cataract surgery?

Kodjikian, Laurent; Beby, F.; Rabilloud, M.; Bruslea, D.; Halphen, I; Fleury, J.; Jd, Grangé; Jg, Garweg

doi:10.1038/sj.eye.6702544

Cited by 12 publications

(6 citation statements)

References 30 publications

(31 reference statements)

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“…We should also recognize intraocular lenses as a potential source of contamination; polymethylmethacrylate (PMMA) intraocular lenses have a higher incidence rate of bacterial endophthalmitis [19]. However, our study did not evaluate intraocular lenses.…”

Section: Discussionmentioning

confidence: 99%

Anterior chamber bacterial contamination in cataract surgery

et al. 2014

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BackgroundThe incidence of postoperative endophthalmitis has reduced during last several years to <0.01%; however, its associated complications continue to be devastating. Several sources of infection, including contamination by air, solutions, surgical instruments, intraocular lens, and wound leakage have been identified. The objective of this study was to evaluate the surgical technique, antibiotics, and asepsis that are used to reduce the risk of infection during cataract surgery.MethodsThis was a transversal prospective study, in which 64 cataract surgeries were evaluated from 32 patients, with 1 month recovery time; and cultures from preoperative and postoperative aspirates were analyzed. Two groups were established based on whether preoperative antibiotics were given or not. The analysis employed descriptive statistics.ResultsOf the 32 patients whose aspirates were obtained, three (9.37%) and 10 (31.25%) yielded positive cultures preoperative and postoperatively respectively. Staphylococcus species was the most common contaminating bacteria. The isolation of Staphylococcus species may indicate its potential as exogenous contaminant at time of wound closure. The cultures obtained from patients using preoperative antibiotics were positive for S. aureus in 10% (n = 2) of cases, and positive in 8.33% (n = 1) of cases not using antibiotics. The mean transoperative time with positive growth was 67 ± 17.8 minutes, and with negative growth was 76.3 ± 25.2 minutes. Two surgical techniques were evaluated: phacoemulsification and extracapsular extraction. The extracapsular technique showed a contamination rate of 33.33% (n = 8) compared to phacoemulsification with a rate of 25% (n = 2) (RR = 1.33).ConclusionsCommon contaminating microorganisms included the Staphylococcus species, which was isolated from the eyelids and ocular annexes at the time of wound closure. The isolation of microorganisms postoperatively could have been influenced by the surgical technique used, the surgical time, and the use of antibiotics.

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Section: Discussionmentioning

confidence: 99%

Anterior chamber bacterial contamination in cataract surgery

et al. 2014

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“…Earlier studies have also shown an association between gender and risk of endophthalmitis, although not all. 5,9,13,27,28 It might be partly explained by the geographic variation.…”

Section: Eyementioning

confidence: 99%

Acute endophthalmitis after cataract surgery at a referral centre in Northern Taiwan: review of the causative organisms, antibiotic susceptibility, and clinical features

Cheng

Chang

Chen

et al. 2010

Eye

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Purposes The aims of this study were to describe the bacterial isolates and treatment outcomes of endophthalmitis after cataract surgery at a referral centre in Northern Taiwan. Methods This was a retrospective, interventional, and observational series. Medical records were review of patients with clinical diagnosed, and/or culture-proven bacterial endophthalmitis at a tertiary referral centre in Northern Taiwan from January 2002 to December 2008. Treatment generally conformed to standard guidelines. Main outcome measurements were results of organism culture, antibiotic susceptibility of isolated bacteria, and visual acuity (VA) outcome. Results Thirty-four patients had positive cultures. A total of 55.9% of the culturepositive isolates were Gram negative and 44.1% were Gram positive. Pseudomonas aeruginosa was the most commonly isolated organism. Eighteen patients had final VA better than 5/200, and 41 had final VA worse than 5/200. In multiple linear regression analysis, female gender, presence of hypopyon, and worse baseline VA were significant independent predictors of worse visual outcome. Conclusions It was found that at a referral centre in Northern Taiwan, the majority of bacterial isolates were Gram negative in acute postoperative bacterial endophthalmitis after cataract surgery and P. aeruginosa was the most common bacterial isolate.

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“…These numbers may further increase if the patient also has an implanted intra-ocular lens (IOL). For example, a common IOL material-PMMA [43]-is expected to have increased attenuation by 0.4 dB at 1 MHz and roughly 3 dB at 10-20 MHz (calculated using values from [44]) in addition to much stronger reflections (24% versus 1%). The combination of the known frequency-dependent attenuation and the predicted frequency-dependent efficacy indicates that increasing the frequency necessitates a strongly super-linear corresponding increase in the incident intensity.…”

Section: Frequency-intensity Tradeoffs and Safety Considerationsmentioning

confidence: 99%

Towards multifocal ultrasonic neural stimulation II: design considerations for an acoustic retinal prosthesis

et al. 2012

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Ultrasound waves, widely used as a non-invasive diagnostic modality, were recently shown to stimulate neuronal activity. Functionally meaningful stimulation, as is required in order to form a unified percept, requires the dynamic generation of simultaneous stimulation patterns. In this paper, we examine the general feasibility and properties of an acoustic retinal prosthesis, a new vision restoration strategy that will combine ultrasonic neuro-stimulation and ultrasonic field sculpting technology towards non-invasive artificial stimulation of surviving neurons in a degenerating retina. We explain the conceptual framework for such a device, study its feasibility in an in vivo ultrasonic retinal stimulation study and discuss the associated design considerations and tradeoffs. Finally, we simulate and experimentally validate a new holographic method--the angular spectrum-GSW--for efficient generation of uniform and accurate continuous ultrasound patterns. This method provides a powerful, flexible solution to the problem of projecting complex acoustic images onto structures like the retina.

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Influence of intraocular lens material on the development of acute endophthalmitis after cataract surgery?

Cited by 12 publications

References 30 publications

Anterior chamber bacterial contamination in cataract surgery

Anterior chamber bacterial contamination in cataract surgery

Acute endophthalmitis after cataract surgery at a referral centre in Northern Taiwan: review of the causative organisms, antibiotic susceptibility, and clinical features

Towards multifocal ultrasonic neural stimulation II: design considerations for an acoustic retinal prosthesis

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