Multicenter clinical study of safety and efficacy of selective laser trabeculoplasty for Chinese primary open angle glaucoma / 中华实验眼科杂志

ABSTRACT

Background Selective laser trabeculoplasty (SLT) is a safe and effective therapy to the treatment of primary open angle glaucoma (POAG),and the clinical application is approved by American FDA.However,the relevant researching outcomes from several single-center study are in dispute owing to non-uniform approach in China.A muhicenter clinical trial is need to verify the effectiveness of SLT for Chinese POAG.Objective This study was to investigate the safety and efficacy of SLT in Chinese POAG patients.Methods A prospective,multicenter and self-controlled clinical trail was designed.Sixty-two eyes of 62 POAG patients with the age of ≥ 18 years were enrolled.Frequency SLT was performed around 360° angle using Lumenis Selecta DuetTM or Lumenis Selecta Ⅱ laser instrument,with the 100 non-overlapping spots,3 ns preset time,400 μm size of laser spot and 0.6 mJ energy.The operated eyes were followed-up for 6 months.The curative effects were checked including intraocular pressure (IOP),IOP-lowing value,number and percentage of IOP-lowing 20％ and 30％.The therapyrelated complications were recorded including the number of conjunctival congestion and cloudy of the anterior chamber.Results The preoperative IOP was (25.7±2.6) mmHg in the 62 eyes.The IOP was significantly lowed 1 day,2 weeks,4 weeks,3 months and 6 months after SLT in comparison with preoperative IOP (all at P＜0.001) with the lowest value of (16.5±4.5)mmHg in postoperative day 1.IOP was stable from 4 weeks to 6 months after operation.The mean lowing-value of IOP was 5.3-9.2 mmHg from 1 day through 6 months after SLT.The percentage of eyes 20％ drop in lOP was 83.9％,and that of 30％ drop was 58.1％ in postoperative day 1.In 6 months after SLT,percentages of eyes 20％ and 30％ drop in IOP were 56.5％ and 27.4％,respectively.Conclusions SLT is a safe and effective method of lowing IOP for POAG eyes in Chinese population.