Table 4.

Recorded postoperative complications (early and late) with the timing of occurrence

Complications	Frequency	Percent	Timing of occurrence
Early complication (within 1 month):
Conjunctival opening without tube exposure	1	2.0	2nd week
Early opening of the device (without hypotony)	2	4.0	1st week and 2nd week
Early hypotony and cataract progression	1	2.0	2nd week
Uncontrolled uveitis with uncontrolled IOP (extensive anterior synechiae)	1	2.0	1st week
Late complications:
Cataract progression	1	2.0	9th month
Uncontrolled IOP	2	4.0	4th month
Severe encapsulation	1	2.0	4th month
Silicon egression	1	2.0	2nd month
Tube exposure	3	6.0	3rd, 6th, and 9th month
No complications	37	74.0

IOP intraocular pressure