Table 3

(A) Intraoperative and postoperative complications; (B) postoperative interventions; (C) revisions, reoperations and other surgeries

(A) ComplicationsIntraoperativeEarly postoperative (<3 months)Late postoperative (>3 months)
Conjunctival buttonhole5 (4.8%)
Repeated passes to insert microshunt5 (4.8%)
Hypotony (IOP ≤5 mmHg)20 (19.2%)1 (1.0%)
Numerical hypotony without sequelae8 (7.7%)0
Clinical hypotony with sequelae12 (11.5%)1 (1.0%)
Hypotonous maculopathy1 (1.0%)0
Choroidal detachment11 (10.6%)0
Iridocorneal touch3 (2.9%)0
Hyphaema/microhyphaema6 (5.8%)0
Bleb leak6 (5.8%)0
Corneal oedema1 (1.0%)0
Corneal abrasion1 (1.0%)0
Microshunt exposure01 (1.0%)
Cystoid macular oedema01 (1.0%)
(B) InterventionsNo of eyes (%)
5-Fluorouracil (5FU) injection35 (33.7)
Dexamethasone/ betamethasone injection24 (23.1)
Combined 5FU+steroid injection12 (11.5)
Tissue plasminogen activator injection1 (1.0)
Bevacizumab injection1 (1.0)
Any subconjunctival injection46 (44.2)
Repeated subconjunctival injections (>1 injection)25 (24.0)
Viscoelastic injection in anterior chamber6 (5.8)
Needling13 (12.5)
Repeated needling (>1 needling)7 (6.7)
(C) ReoperationsEarly postoperative
(<3 months)
Late postoperative
(>3 months)
Bleb revision for high IOP1 (1.0%)8 (7.7%)
Bleb revision for leak2 (1.9%)1 (1.0%)
Bleb revision for exposed tube01 (1.0%)
Glaucoma drainage device01 (1.0%)
iStent inject01 (1.0%)
Phacoemulsification02 (1.9%)
  • IOP, intraocular pressure.