Comparison of Different Procedures in a Combination of ab Interno Microhook Trabeculotomy and Cataract Surgery
Abstract Purpose. To compare the clinical outcomes of ab interno microhook trabeculotomy (µLOT) before and after cataract surgery for the combination of µLOT and cataract surgery. Methods. This retrospective case series included 24 eyes that underwent µLOT combined with cataract surgery at Kochi University Hospital. Groups 1 and 2 included eyes that underwent µLOT before and after cataract surgery (12 eyes each), respectively. The patient characteristics and clinical outcomes were also analyzed.Results. The mean preoperative intraocular pressure (IOP) in Groups 1 and 2 (25.3 ± 11.0 mmHg and 22.4 ± 10.5 mmHg) were reduced significantly to 14.5 ± 3.6 mmHg and 12.3 ± 3.0 mmHg, respectively, at 5–7 months postoperatively. The mean preoperative number of antiglaucoma medications in Groups 1 and 2 (4.3 ± 1.4 and 3.7 ± 1.5) had also decreased significantly to 2.7 ± 0.9 and 1.7 ± 1.6 at 5–7 months postoperatively. Postoperative hyphema with niveau formation was observed in five eyes in Group 2 (41.7%) but not in Group 1. Conclusion. For the combination of µLOT and cataract surgery, performing µLOT before cataract surgery may be less likely to result in postoperative hyphema with niveau.