Impact of a laminar air flow portable device on post-intravitreal injection endophthalmitis rate.

Airaldi, Matteo; Parrulli, Salvatore; Trinco, Andrea; Cinus, Federico; Staurenghi, Giovanni; Pellegrini, Marco; Cereda, Matteo · Br J Ophthalmol · 2026

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Abstract

Intravitreal injections (IVIs) are the most common outpatient procedure worldwide, yet no consensus exists regarding their optimal setting. This study analysed 101 976 IVIs performed between 2017 and 2023, comparing endophthalmitis rates before and after introducing a mobile laminar air flow (LAF) device in a clean room. The incidence of endophthalmitis decreased from 0.033% to 0.013%, a 63.2% risk reduction (Odds Ratio=0.368, p=0.04). These findings suggest that mobile LAF enhances air quality and reduces infection risk, offering a cost-effective, efficient alternative to operating theatres for IVIs.

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