Techniques and outcomes of minimally invasive trabecular ablation and bypass surgery

The British Journal of Ophthalmology
K KaplowitzNils A Loewen

Abstract

Minimally invasive glaucoma surgeries (MIGS) can improve the conventional, pressure-dependent outflow by bypassing or ablating the trabecular meshwork (TM), or creating alternative drainage routes into the suprachoroidal or subconjunctival space. They have a highly favourable risk profile compared to penetrating surgeries, and lower intraocular pressure with variable efficacy that may depend on the extent of outflow segments accessed. Since they are highly standardised procedures that use clear corneal incisions, they can elegantly be combined with cataract and refractive procedures to improve vision in the same session. There is a growing need for surgeons to become proficient in MIGS to address the increasing prevalence of glaucoma and cataracts in a well-informed, aging population. Techniques of visualisation and instrumentation in an anatomically highly confined space with semitransparent tissues are fundamentally different from other anterior segment surgeries, and present even experienced surgeons with a substantial learning curve. Here, we provide practical tips, and review techniques and outcomes of TM bypass and ablation MIGS.

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Related Concepts

Glaucoma
Ophthalmologic Surgical Procedures
Trabecular Meshwork Structure
Stent, Device
Benefit-Risk Assessment
Surgical Procedures, Minimally Invasive
Aging
Drainage Procedure
Glaucoma
Physiologic Intraocular Pressure

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