Phacotrabeculectomy Versus Phacogoniotomy (PVP) in Advanced Primary Angle-closure Glaucoma

Inclusion criteria

• ✓. Aged 40-80 years;
• ✓. Diagnosed with advanced PACG: meet with (1) (2) (3) or (1) (2) (4)
• ✓. At least 180-degree PAS under gonioscopy and it should cover the nasal and inferior quadrants for surgical purposes;
• ✓. IOP \>21 mmHg with or without anti-glaucoma medication;
• ✓. Obvious glaucomatous optic neuropathy (cup-to-disc \[C/D\] ratio≥0.7, or C/D asymmetry \> 0.2, or the rim width at the superior and inferior temporal \< 0.1 vertical diameters of optic disc);
• ✓. With glaucomatous visual field defects, such as nasal step, arcuate scotoma, and paracentral scotoma on a reliable Humphrey analyzer using SITA-Standard 24-2 or 30-2 algorithm; mean deviation ≤ -12dB;
• ✓. Clinically obvious cataract and uncorrected visual acuity (UCVA) \<0.63 (Early Treatment Diabetic Retinopathy Study, \[ETDRS\] chart), or need lens extraction assessed by a clinician;
• ✓. Voluntarily participate in study and provide signed informed consent.