Efficacy and Safety of Gonioscopy Assisted Transluminal Trabeculotomy in Patients with Primary Open-angle Glaucoma and Cataract.

Inclusion Criteria:

• Patients aged 40 years or older,

• Previously included in the glaucoma departments of the participating institutions,

• Indication for cataract surgery, diagnosed by clinical examination with visualacuity (VA) equal to or worse than 20/40,

• Primary Open Angle Glaucoma (POAG), determined by the presence of typical visualfield (VF) defects and/or by the aspect of the optic nerve observed at fundoscopy orretinography (increased vertical optical excavation with thinning of the neuralrhyme, asymmetry of the cup/disc ratio greater than 0.2, localized loss ("notch") ordefect in the retinal nerve fiber layer ("Hoyt")).

• APIC classification with amplitude greater/equal to 2 and pigmentation less than 4on gonioscopy.

• Intraocular pressure (IOP) less than or equal to 25 mmHg before washout ofhypotensive eye drops.

• IOP between 22 and 30 mmHg after washout of hypotensive eye drops or with a historyof IOP greater than or equal to 21 mmHg in more than one previous care described inthe medical record.

Exclusion Criteria:

Patients who have any of the following situations:

• Severe glaucoma, determined according to the Hoddap-Parrish-Anderson criteria;

• Axial diameter greater than 26 mm or less than 21.00 mm;

• Endothelial count less than 1500 cc;

• Pachymetry less than 480 or greater than 600 microns;

• Patients undergoing some type of intraocular surgery or laser procedure in thepreoperative period and/or after these procedures in the postoperative period;

• Those who present some important per-operative complication during the study.

• With high risk of progression, the so-called rapid progressors, who are patientswith high IOPs even with the use of many medications, regardless of the severity ofthe nerve injury.