A 13-year-old female patient with refractory primary congenital glaucoma (PCG) in the right eye who had a history of multiple glaucoma operations underwent ab interno 180-degree trabeculectomy with the Kahook Dual Blade (KDB) targeting the nasal and inferior angles. On postoperative day 1, the intraocular pressure (IOP) of the right eye reduced from 43 to 15 mmHg while on medical therapy. The patient maintained this IOP level throughout the 6-month follow-up. Ab interno KDB trabeculectomy targeting both nasal and inferior angles may be an effective and safe procedure for the treatment of PCG even in eyes with a history of previously failed glaucoma procedures.
MandalAKChakrabartiD.Update on congenital glaucoma. Indian J Ophthalmol2011; 59: 148–157.
5.
HarveyMMSchmitzJW.Use of ab interno Kahook Dual Blade trabeculectomy for treatment of primary congenital glaucoma. Eur J Ophthalmol2020; 30: NP16–NP20.
6.
KhouriASWongSH.Ab interno trabeculectomy with a dual blade: surgical technique for childhood glaucoma. J Glaucoma2017; 26: 749–751.
7.
SeiboldLKSoohooJRAmmarDA, et al. Preclinical investigation of ab interno trabeculectomy using a novel dual-blade device. Am J Ophthalmol2013; 155: 524–529.
8.
KhouriASZhuYSadekH.Ab interno trabeculectomy with the dual blade in juvenile open-angle glaucoma. Eur J Ophthalmol2019; 4: 1120672119892440.
9.
HassaneinDHAwadeinAElhilaliH.Factors associated with early and late failure after goniotomy for primary pediatric glaucoma. Eur J Ophthalmol2020; 30: 162–167.
10.
LarocheDNorteyANgC.A novel use of trypan blue during canalicular glaucoma surgery to identify aqueous outflow to episcleral and intrascleral veins. J Glaucoma2018; 27: e158–e161.
11.
CarreonTMerweEFellmanRL, et al. Aqueous outflow – a continuum from trabecular meshwork to episcleral veins. Prog Retin Eye Res2017; 57: 108–133.
