[Establishment of the 4R classification system of minimally invasive glaucoma surgery]

Minimally invasive glaucoma surgery (MIGS) is characterized by minimal injuries and complications, with its surgical volume increasing annually in China. It encompasses a diverse range of surgical techniques. To accurately understand and select appropriate surgical indications and ensure optimal therapeutic outcomes, this article emphasizes the necessity of proposing a new classification system for MIGS. By discussing the structural and functional complexity of the trabecular meshwork and Schlemm's canal and comparing the efficacy of MIGS with different design principles, we introduce the MIGS 4R classification system based on the structural and functional integrity of the trabecular meshwork and Schlemm's canal, along with a sequential surgical selection approach, to provide reference for ophthalmologists in clinical practice.