
Preservative‐free topical medications have been introduced for glaucoma care to reduce ocular adverse events associated with preservatives. This is a systematic review and meta‐analysis of randomized clinical trials (RCTs) comparing the efficacy and safety of beta‐blockers, or combination using beta‐blockers, with and without preservatives. The primary outcome was change in intraocular pressure (IOP) from baseline to final follow‐up. Secondary outcomes included ocular and systemic side effects, and other clinical and quality of life outcomes. The study found no clinically relevant difference in mean change in IOP between the preserved and the preservative‐free treatments. The increasing use of preservative‐free drops may be associated with better ocular surface and tolerability, but strong evidence from RCTs would be welcome.
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