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  • Title: [Infections after intraocular lens surgery: implications for refractive surgery].
    Author: Taneri S, Heiligenhaus A.
    Journal: Klin Monbl Augenheilkd; 2012 Sep; 229(9):910-6. PubMed ID: 22972356.
    Abstract:
    Apart from the classical indication of removing an opaque lens that is compromising vision, extraction of the crystalline lens is gaining increasing importance as a refractive procedure. This literature review which considers the present guidelines of various ophthalmological societies and recently published studies is intended to give an estimate of the incidence of postoperative endophthalmitis and evidence-based recommendations for its prophylaxis, diagnosis, and therapy. The incidence of endophthalmitis after cataract extraction is reported to be 0.04% to 0.3% in most sizeable studies. Immediate sequential bilateral cataract surgery is internationally gaining popularity. It remains difficult to estimate whether or not the risk of endophthalmitis is affected with this approach. A toxic anterior segment syndrome (TASS) needs to be differentiated from postoperative endophthalmitis. TASS is an acute sterile inflammation after cataract surgery. Remnants of detergents and antiseptics on the surgical instruments are supposed to be main triggers. Additionally, the inappropriate preparation of solutions and antibiotics for intracameral use is considered to be a major cause. A case of TASS was also reported after implantation of an iris-fixated anterior chamber lens in a phakic eye. The cefuroxime solution that was prophylactically used in the ESCRS study and that is recommended for routine cataract surgery is not commercially available in Germany as a ready preparation for intraoperative application. Different measures are undertaken in different countries to prevent postoperative endophthalmitis, whose values are not exactly quantifiable. Antisepsis with povidone-iodine is still considered to be the component with the best evidence. For management of acute postoperative endophthalmitis, the systemic application of antibiotics is recommended in addition to their intravitreal injection. Few case reports have been published describing an infection after the implantation of refractive intraocular lenses (IOLs) in a phakic eye. However, we could not find meaningful information regarding the incidence of endophthalmitis after implantation of refractive IOLs. Based on the fact that these IOLs are not implanted into the capsular bag but in front of the crystalline lens or into the anterior chamber, and the presumably better anti-microbial immunity of this younger population compared to cataract patients, one may assume that the infection rate is lower than after cataract surgery. Nevertheless, a prospective register to document all endophthalmitis cases is desirable.
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