Gonioscopy-assisted transluminal trabeculotomy versus goniotomy with Kahook dual blade in patients with uncontrolled juvenile open-angle glaucoma: a retrospective study

Table 3 Complications and additional IOP-lowering procedures after GATT and KDB

	GATT (N = 36)	KDB (N = 13)	P value
Complications
Hyphema	36 (100%)	13 (100%)	/
Transient IOP spike	12 (33.3%)	2 (15.4%)	0.219^a
Hypotony	1 (2.78%)	3 (23.1%)	0.022^a
Photophobia	1 (2.78%)	/	0.735^b
Additional procedures	5 (13.9%)	8 (61.5%)	0.001^a
Ahmed valve	4 (11.1%)	2 (15.4%)
SLT	2* (5.56%)	3 (23.1%)
Excision of encapsulated bleb for previous GDD	1 (2.78%)	/
GATT	/	3 (23.1%)

*These two patients went through SLT and subsequent valve implantation and excision of encapsulated bleb, respectively. IOP intraocular pressure, GATT gonioscopy-assisted transluminal trabeculotomy, KDB Kahook dual blade, SLT selective laser trabeculoplasty, GDD glaucoma drainage device
^a Chi-square test
^b Fisher’s exact test

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