Management of Postoperative AcremoniumEndophthalmitis

Abstract

Purpose: Four patients presented after cataract surgery with delayed-onset endophthalmitis caused by Acremonium kiliensewith in vitro sensitivity to amphotericin B. In all patients, ocular infection was recalcitrant to single-dose intravitreous amphotericin B injection. The authors reviewed the management of endophthalmitis caused by A. kilienseand presented treatment recommendations.Methods: The authors retrospectively evaluated a cluster of four patients with delayed-onset postoperative endophthalmitis after phacoemulsification with posterior chamber intraocular lens implantation. All patients underwent vitreous sampling, intravitreous injection of amphotericin B, and systemic administration of fluconazole. Pars plana vitrectomy was performed in all patients for management of either primary (1 eye) or persistent infection (3 eyes). Two patients with persistent infection also underwent surgical explanation of their posterior chamber intraocular lens.Results: Worsening infection developed in three of three eyes that underwent vitreous aspiration with intravitreous injection of 5 μg amphotericin B. These patients subsequently responded to vitrectomy followed by additional intravitreous amphotericin B injection. One eye underwent primary vitrectomy and intravitreous injection of 7.5 μg amphotericin B. Although treatment of the initial infection was successful, fungal keratitis developed in this patient 3 months after presentation. Visual outcome was variable, ranging from visual acuity of 20/25 to no light perception with follow-up of 2 years. Epidemiologic investigation suggested a common environmental source for the A. kilienseorganisms.Conclusions: Single-dose administration of intravitreous amphotericin B was inadequate treatment for fungal endophthalmitis caused by A. kiliense. Vitrectomy with repeated intravitreous administration of amphotericin B may be necessary to eradicate intraocular infection caused by this organism.