*3.5.3 Surgical technique*

*Current Cataract Surgical Techniques*

*3.4.2 Indications and contraindications*

Ab-interno canaloplasty (ABiC) is an ab-interno MIGS that viscodilate de TM,

ABiC is effective at reducing IOP and medication use in eyes with uncontrolled primary open-angle glaucoma (POAG) with or without cataract surgery [9]. It is useful in combination with cataract surgery as incisions resemble those of a typical cataract extraction and the IOP lowering effect of both procedures is enhanced [10]. Moreover, the addition of ABiC to phacoemulsification could be considered astig-

As in the resto of MIGS, the epiescleral venous-resistant floor limits the IOPlowering effect, so ABiC seems to be indicated such as a minimal invasive technique that does not affect future conjunctival bleb surgeries in patients with or without cataracts and POAG that need a modest IOP-lowering effect in order to reduce IOP

After cataract surgery, the side port corneal incision is used in order to introduce viscoelastic and the microcatheter towards the nasal angle [10]. A side port incision for the iTrack™ microcatheter is created approximately 90° away from de nasal drainage angle, wich is inserted into the AC with te catheter tip guided towards the nasal angle [10]. A 25 G needle or a Cystotome® is used to perform a micro-goniotomy in the nasal TM under visualization using a gonioprism [9]. The microcatheter is held by a micro-surgical forceps and the SC is intubated inserting the catheter through the goniotomy until complete the circumferential intubation of SC 360° [10]. After that, the catheter is slowly withdrawn while infusing viscoelastic every clock hour [9]. Finally, the catether is removed, the viscoelastic is washed, and the

ABiC shows no serious adverse events and less complications compared to more

OMNI™ Surgical System is an ab-interno MIGS that combines two functions into one device: microcatherization and vascodilation in up to 360° of the SC (open distal outflow pathway) and cutting of the TM (controlled and Customizable trabeculotomy that removes the resistance of the TM) using a single fully integrated handheld system [11]. The system has got a luer fitting that allows for efficient priming of the device with viscoelastic, a priming lock, a reservoir where microcatheter is retracted, the gears whose movilization with the finger facilitate

invasive conventional techniques; adverse events are limited to intraoperative

bleeding at the goniotomy site and postoperative microhyphema [10].

SC and the collerctor channels 360° inserting a microcatheter [10].

corneal incision is sealed by hydrating the stroma [10].

**3.4 ABiC**

*3.4.1 Definition*

matically neutral [10].

or medication [10].

*3.4.4 Security*

**3.5 OMNI**

*3.5.1 Definition*

*3.4.3 Surgical technique*

**30**

The head of the patient and the microscope are tilted 30–40° and OMNI is introduced using the temporal clear corneal incision of the cataract surgery towards the nasal angle [11]. A small (<1 mm) goniotomy is created with the cannula tip in order to introduce the microcatheter for 180° of the SC under gonioscopic visualization (**Figure 2(D)**) [11]. Viscoelastic is delivered for viscodilation while microcatheter is retracted [11]. Microcatheter is again advanced and withdrawn with a 90° traction causing the unroof the SC (trabeculotomy) [11]. The process is repeated for the second 180° [10]. This technique allows varying the intensity of the treatment: for example, we can perform a 360° viscodylation and a 180° trabeculotomy.
