Sub‐conjunctival drainage

Summary Minimally invasive glaucoma surgery ( MIGS ) has a favourable safety profile compared to traditional filtering glaucoma surgery. The term MIGS was originally coined to utilize the eyes natural outflow pathways. Newer subconjunctival surgeries have shown much promise in the published literature thus far whilst still maintaining excellent safety, and therefore the remit of MIGS has expanded. Xen surgery is an ab‐interno implant that has internal lumen of 45 microns and total length of 6mm. It is inserted via both gonioscopic and external visualisation penetrating sclera 3mm from the limbus usually in the superior nasal quadrant. I will discuss strategies to try and achieve reproducible sub‐conjunctival placement of the Xen implant to achieve and maintain target IOP and reduce the risk of encapsulation and further post‐op manipulations. Innfocus micro‐shunt is an ab‐externo implant. Its internal lumen is 70microns and total length is 8mm. Its placement involves a periotomy and dissection of tenon's to create a potential space for drainage. It is inserted 3mm from the limbus and can be placed in any quadrant of the eye. Pearls on intra‐operative and post‐operative management will be discussed in the symposium.