Abstract

ABSTRACTObjective: This study compared the safety and efficacy of loteprednol etabonate 0.5%/tobramycin 0.3% (LE/T; Zylet) with dexamethasone 0.1%/tobramycin 0.3% (DM/T; Tobradex) in the treatment of ocular inflammation associated with blepharokeratoconjunctivitis.Research design and methods: This was a multicenter, randomized, investigator-masked, parallel-group study. Subjects with clinically diagnosed blepharokeratoconjunctivitis in at least one eye were randomized to LE/T (n = 138) or DM/T (n = 138) administered four times per day, for 14 days. The primary efficacy endpoint was the change from baseline to Day 15 (± 1 day) in the signs and symptoms composite score using a non-inferiority metric to compare LE/T to DM/T. Safety endpoints included visual acuity (VA), biomicroscopy, intraocular pressure (IOP) assessments, and adverse events.Results: At Day 15, the mean (SD) change from baseline in the signs and symptoms composite score was −15.2 (7.3) for LE/T-treated subjects and −15.6 (7.7) for DM/T-treated subjects. The upper bound of the 90% confidence interval for the difference in change from baseline was less than the non-inferiority margin not only at Day 15 but also at Day 7 and Day 3 for both the intent-to-treat and per protocol populations. Subjects treated with DM/T experienced a significant increase in IOP versus those treated with LE/T at Day 7, Day 15, and overall (mean [SD] of 0.6 [2.3] vs, −0.1 [2.2], p = 0.03, 1.0 [3.0] vs. −0.1 [2.4], p = 0.01, and 2.3 [2.3] vs. 1.6 [1.7], p = 0.02, respectively).Conclusions: LE/T satisfied the condition of non-inferiority to DM/T in decreasing the signs and symptoms of ocular inflammation associated with blepharokeratoconjunctivitis. Subjects treated with DM/T experienced more of an increase in IOP.Limitation: Although the single-masked design of this study could be considered a limitation, care was taken to ensure that the investigator was masked.

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