Minimally Invasive Glaucoma Surgery (MIGS): An Overview

Glaucoma is a chronic eye condition in which impaired drainage of aqueous humour leads to elevated intraocular pressure (IOP) and progressive optic nerve damage. Traditionally, it has been managed with medications, laser therapy, or invasive surgeries such as trabeculectomy and aqueous shunt implantation. Minimally Invasive Glaucoma Surgery (MIGS) encompasses a range of less invasive procedures that target the trabecular meshwork, suprachoroidal space or Schlemm’s canal, designed to bridge the gap between medications, laser therapy, and conventional surgery. While MIGS is relatively new, having been in clinical use for just over a decade, it has rapidly evolved and gained acceptance among glaucoma specialists. Importantly, MIGS is often performed alongside cataract surgery, which can enhance the pressure-lowering effect of cataract extraction itself.