Mid-Term Surgical Outcomes of T Hook, 360° Suture Tra-Beculotomy, Kahook Dual Blade, and Tanito Microhook Pro-Cedures: A Comparative Study

Aim: To compare the three-year surgical outcomes among the Kahook dual blade (KDB), Tanito micro hook (TMH), T hook and 360° suture trabeculotomy (S-lot) co-horts Study design: Retrospective interventional comparative study conducted at a single eye center Subjects and Methods: A total of 224 eyes that underwent combined cataract surgery with either KDB, TMH, T hook or S-lot procedures were retrospectively analyzed over the three-year period. Results: According to Tukey’s multiple comparison test, postoperative intraocular pressure (IOP) in S-lot cohort was significantly lower than that in the TMH cohort from 1 month to 3 years (P=0.01 to < 0.001), lower than the KDB cohort between 6 month and 1 year (P=0.026 to < 0.001), lower than in the T hook cohort at 1 month (P=0.012) and from 6 to 12 months (P< 0.001). Survival probability to achieve ≤15mmHg and ≤18mmHg in S-lot was better than others by P< 0.001 and 0.005, respectively. At 3 months, the T hook cohort showed significantly lower IOP than TMH (P=0.029), and 1 week, IOP was marginally lower than that in the KDB (P=0.063) and TMH (P=0.052) cohorts, based on Dunnett’s test. However, no significant differences in postoperative IOP were observed among the three sectorial canal-opening surgery (COS) groups be-yond 6 months. Conclusion: Among the four MIGS cohorts, S-lot provided the most substantial mid-term postoperative IOP reduction. The T-hook cohort showed marginally superior IOP reduction at 1 week compared to the KDB and TMH groups.