?:abstract
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OBJECTIVE: The intravitreal injection (IVI) of pharmacological agents is the most commonly performed ocular procedure and is associated with a host of complications. The majority of IVI-related complications data is derived from randomized controlled clinical trials, which report a high adverse event rate. The nature of these protocol-driven trials limit their applicability to the diverse circumstances seen in routine clinical practice. The goal of this study is to determine the prevalence of patient reported IVI-related complications, their risk factors, and the manner in which patients presented in a tertiary eye care center. DESIGN: A retrospective, IRB-approved review. SUBJECTS, PARTICIPANTS AND/OR CONTROLS: 44,734 injections in 5,318 unique patients at the Cleveland Clinic Cole Eye Institute from 2012-2016. METHODS, INTERVENTION, OR TESTING: Intravitreal injection. MAIN OUTCOME MEASURES: Complication occurrence within 15 days of injection. RESULTS: From 2012-2016, a total of 44,734 injections were performed in 5,318 unique patients. Overall, complication rates were low, representing 1.9% of all injections, with 1031 unique complications in 685 (12.9%) patients. The most common minor complications, or those not requiring intervention, were irritation (n=312) and subconjunctival hemorrhage (n=284). The most common serious complications, or those requiring intervention, were corneal abrasion (n=46) and iritis (n=31). The majority of complications (66%) were adequately managed by a telephone/Epic electronic message encounter only. Importantly, no injection protocol parameter, such as type of anesthesia, preparation, or post-injection medication, increased the risk of a complication. However, patient sex, age, number of previous injections, and provider strongly influenced the risk of patient-reported complications. CONCLUSIONS: Overall, complication rates seen in routine clinical practice were low compared to clinical trial reporting. Providers should feel confident in the safety and administration of IVI during times when follow-up office visits and resources may be limited. When performing an IVI, factors such as a patient’s sex, age, number of previous injections, and provider must be taken into account to ensure the best possible outcomes.
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