Purpose: Efficacy and safety evaluation of Kahook Dual Blade (KDB) goniotomy vs iStent inject implantation. Materials and Methods: Retrospective study in patients that underwent goniotomy with KDB or iStent inject implantation, stand-alone or combined with cataract surgery. Main outcome parameters were intraocular pressure (IOP), number of glaucoma medications, proportion of eyes achieving >20% IOP reduction and number of eyes with postoperative IOP <19 mmHg at last follow-up. Results: A total of 29 patients (30 eyes) were included in the iStent inject group and 30 patients (32 eyes) in the KDB group. Mean follow-ups were 20.9±6.5 (KDB-alone) to 29.5 ±7.6 (phaco-iStent inject) months. Pre-and post-operative IOPs were 22.2±5.8 mmHg and 15.9±4.3 mmHg (P=0.004) in the KDB-alone, 24.2±6.8 mmHg and 16.2±6.7 mmHg (P=0.001) in the phaco-KDB, 20.6±5.4 mmHg and 20.9±6.8 mmHg (P=0.598) in the iStent inject-alone as well as 20.9±5.5 mmHg and 15.6±3.4 mmHg (P=0.003) in the phaco-iStent inject subgroups. No major complications occurred. Conclusion: All KDB and iStent subgroups except the stand-alone iStent inject subgroup showed a clinically significant IOP-lowering effect as a stand-alone procedure or combined with cataract surgery. Goniotomy with KDB in this setting seems to offer an advantageous IOP reduction compared to iStent inject.
Needling revision following XEN gel stent implantation showed a good IOP-lowering effect without significant increase in number of antiglaucoma medications, decrease in visual acuity, nor any major complications. Further studies with long-term follow-up and a larger number of patients are needed to fully assess the safety and efficacy of this procedure.
This case report describes the first case of CME following uneventful stand-alone KDB goniotomy and highlights the importance of postoperative topical NSAID therapy with regard to both prophylaxis and treatment.
This study provides evidence that a novel UM volume estimation method might offer a practical and cost-efficient alternative to improve the prognostic value intrinsic to a tumour's size.
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