INFECTIOUS AND PRESUMED NONINFECTIOUS ENDOPHTHALMITIS AFTER INTRAVITREAL TRIAMCINOLONE ACETONIDE INJECTION

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Abstract
To report potentially distinguishing characteristics between bacterial endophthalmitis and presumed noninfectious endophthalmitis associated with intravitreal triamcinolone acetonide injection. Records of two patients with culture-proven bacterial endophthalmitis and six patients with presumed noninfectious endophthalmitis from intravitreal triamcinolone acetonide injections were analyzed retrospectively. Two eyes in two patients with culture-proven bacterial endophthalmitis had decreased vision and hypopyon or vitritis, but no pain or conjunctival injection 2 weeks after intravitreal triamcinolone acetonide injection. Seven eyes in six patients with presumed noninfectious endophthalmitis had blurred vision, hypopyon, and variable pain all within 2 days of intravitreal triamcinolone injection. All seven eyes were followed up closely and had rapid resolution of hypopyon and symptoms. Bacterial endophthalmitis after intravitreal triamcinolone acetonide injection may present in an atypical, relatively delayed manner with decreased vision but no pain or redness. Presumed noninfectious endophthalmitis presents within 2 days after the injection, may be accompanied by discomfort, and has a hypopyon that may be the triamcinolone material itself or a sterile inflammatory reaction. In these eyes, the hypopyon and symptoms quickly resolve without treatment.