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Abstract #86172 Published in IGR 21-2

Effect of Apraclonidine and Diclofenac on Early Changes in Intraocular Pressure After Selective Laser Trabeculoplasty

Thrane VR; Thrane AS; Thrane AS; Bergo C; Halvorsen H; Krohn J
Journal of Glaucoma 2020; 29: 280-286


: PRéCIS: Adjuvant diclofenac and apraclonidine eye drop given in conjunction with selective laser trabeculoplasty (SLT) do not significantly impact medium-term intraocular pressure (IOP) reduction compared with placebo, but apraclonidine can be used to blunt immediate postlaser pressure spikes. PURPOSE: There is limited high-grade evidence guiding the choice of eye drops given before and after SLT. The authors chose to measure IOP during the first 24 hours, at 1 week, 6 weeks, and 6 months after SLT, and compare the effect of apraclonidine before SLT and diclofenac after SLT, with placebo. MATERIALS AND METHODS: In this double-blind, randomized, placebo-controlled trial, patients with open-angle glaucoma or ocular hypertension referred for SLT were recruited between 2016 and 2018. Patients were randomized to receive either apraclonidine pre-SLT with placebo post-SLT, placebo pre-SLT with diclofenac post-SLT, or placebo before and after SLT. RESULTS: Sixty eyes from 35 patients were treated with 360-degree SLT. Twenty-four-hour IOP measurements with patient self-monitoring after SLT demonstrated a moderate IOP spike at 1 hour and 2 hours post-SLT in the placebo and diclofenac study arms (mean=+4.05±0.58 mm Hg and +4.47±0.73, respectively, P<0.001 vs. pre-SLT IOP), which was prevented by apraclonidine (mean=-2.41±0.88 mm Hg, P<0.0001 vs. other study arms post-SLT). There were no significant differences between the 3 arms of the study on the long-term IOP reduction achieved by SLT (6 wk: P=0.51, 6 mo: P=0.42). CONCLUSIONS: Neither the use of apraclonidine before SLT nor diclofenac after SLT significantly influenced the IOP reduction induced by SLT. Except for a slight and transient reduction in intraocular inflammation, there was no beneficial effect of diclofenac on early IOP changes or the degree of patient discomfort relative to placebo.

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Classification:

12.4 Laser trabeculoplasty and other laser treatment of the angle (Part of: 12 Surgical treatment)
11.3.3 Apraclonidine, brimonidine (Part of: 11 Medical treatment > 11.3 Adrenergic drugs)
11.15 Other drugs in relation to glaucoma (Part of: 11 Medical treatment)



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