Surgery Viewing Intraocular Surgery Corneal Stimulation Instrumentation Phacoemulsification Access to entire cornea Posterior to iris plane Limited to keratome/side port incisions Bimanual intraocular manipulation Migs Limited to AC depth and increased work distance Anterior to iris plane; risk for bleed, iridodialysis; endothelial damage Goniolens docking stimulates entire surface of sub-epithelial nerve endings Simultaneous extra- and intraocular manipulation

Table 3: Phacoemulsification vs. Micro Invasive Glaucoma Surgery (MIGS). AC: Anterior Chamber.