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Current systems and recent developments of subthreshold laser systems in glaucoma:a narrative review

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摘要 Background and Objective:Subthreshold laser technologies and their applications in ophthalmology have greatly expanded in the past few decades.Initially used for retinal diseases such as central serous chorioretinopathy and diabetic macular edema,subthreshold lasers have recently shown efficacy in the treatment of various types of glaucoma.Our primary objectives are to review the clinical applications of subthreshold laser in the context of glaucoma treatment and discuss the mechanisms of different subthreshold laser techniques,including subthreshold selective laser trabeculoplasty(SSLT),micropulse laser trabeculoplasty(MLT),pattern-scanning laser trabeculoplasty(PSLT),titanium laser trabeculoplasty(TLT),and micropulse transscleral cyclophotocoagulation(MP-TSCPC).Methods:This was a narrative review compiled from literature of PubMed and Google Scholar.The review was performed from March 2021 to October 2021 and included publications in English.We also included information from web pages to cover details of relevant laser systems.We discuss the history of subthreshold laser,recent advancements in subthreshold techniques,and commercially available systems that provide subthreshold capabilities for glaucoma.We highlight basic science and clinical studies that deepen the understanding of treatment mechanisms and treatment effectiveness in the clinical setting respectively.We review commonly used parameters for each technique and provide comparisons to conventional treatments.Key Content and Findings:We found five distinct types of subthreshold laser used in the management of glaucoma.Numerous subthreshold laser systems are commercially available and can provide this treatment.Therefore,understanding the differences between subthreshold techniques and laser systems will be critical in utilizing subthreshold laser in the clinical setting.Conclusions:Traditional laser trabeculoplasty(LT)and cyclophotocoagulation(CPC)have shown effectiveness in the treatment of various types of glaucoma but are associated with visible damage to the underlying tissue and adverse effects.Subthreshold laser systems aim to provide the therapeutic effect found in traditional lasers,while minimizing unwanted treatment related effects.Further clinical studies are needed to evaluate the role of subthreshold lasers in the management of glaucoma.
出处 《Annals of Eye Science》 2022年第3期38-54,共17页 眼科学年鉴(英文)
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