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Laser trabeculoplasty is a simple method for treating glaucoma and ocular hypertension and has few adverse effects. There are different laser systems for reducing the intraocular pressure of patients with glaucoma and ocular hypertension. Complications include transient intraocular pressure elevation, iritis, and anterior synechiae.

Intraocular pressure-lowering laser procedures such as argon laser trabeculoplasty and selective laser trabeculoplasty are nowadays an essential part of glaucoma therapy. This article presents the currently most popular laser systems. These various laser procedures are based on the physical structure of the different lasers and on variable generation of laser light. They vary in their effect on the trabecular meshwork on a histopathological level, as well as in the active principles of intraocular pressure reduction. The mechanical, biological, and repopulation theories are currently used to explain the intraocular pressure-lowering effect of the different laser systems; these are discussed in detail.

Laser trabeculoplasty is a common glaucoma therapy that is safe and effective for reducing intraocular pressure. It was developed as a treatment for open-angle glaucoma in the 1970s, and larger studies proved its effectiveness in the years that followed. In recent years, through the implementation of newer processes such as selective laser trabeculoplasty, laser trabeculoplasty has experienced further developments. Because it causes less damage to the trabecular meshwork, it should have fewer adverse effects, making it a repeatable treatment. Studies on the indications, contraindications, and effectiveness of this method in lowering intraocular pressure are reviewed.

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