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Purpose: To report on delayed-onset hyphema following intravitreal injection of dexamethasone implant Ozurdex® in eyes with a history of gonioscopy-assisted transluminal trabeculotomy (GATT). Observations: We describe two cases of hyphema occurring within one day following Ozurdex® implantation in eyes that had undergone GATT at least one year prior. One case responded well to medical management, while the other required anterior chamber paracentesis for intraocular pressure (IOP) control. Both patients achieved normalization of IOP following resolution of the hyphema, and have not had recurrence. Conclusions and importance: We propose that transient hypotony immediately after Ozurdex® injection may lead to a reflux of blood from the episcleral venous network into the anterior chamber in eyes with prior ab interno trabeculotomy. Glaucoma and retina specialists should be aware of this potential complication to guide follow up and management in the post-injection period for these patients.

Purpose: To report a case of gonioscopy-assisted transluminal trabeculotomy (GATT) in a patient with primary congenital glaucoma. Observations: A three-year-old boy who presented with buphthalmos and elevated intraocular pressure. Despite the presence of iris and iris processes extending to Schwalbe's line, GATT was performed successfully. Conclusions: GATT may be successful with primary congenital glaucoma even when angle structures are not initially visible.

Purpose: To describe our experience of Gonioscopy-Assisted Transluminal Trabeculotomy (GATT) in four eyes with infantile primary congenital glaucoma (PCG). Observations: We report the first two GATT procedures performed in six-month-old infants with PCG. We also report the same procedure in two eyes of a two-year-old boy with PCG who had previous goniotomies with subsequent peripheral anterior synechiae formation. In all four eyes, the IOP remained under 20 mmHg at years three and four postoperatively, without glaucoma medication or conjunctival surgery. Conclusions and importance: Our cases confirm that GATT is an alternative to traditional ab externo glaucoma surgery in PCG and can be successfully performed within the first months of life, or in infants with failed or partially functioning goniotomies, avoiding the need for invasive conjunctival or scleral surgery.