Table 6: Frequency of microbypass stent complications.

TypeFrequency in %

Mild hyphema0–70
Transient IOP spike0–30
Corneal edema0–20
Transient IOP spike0–21
Stent obstruction4–14.9
AC collapse0–2.3
Inability to implant stent0–2.3
Vitreous incarceration0–2.3
Stent malposition0–21.4
Secondary surgery0–4.5