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Short-term outcomes of iStent inject W and Microhook trabeculotomy Shuji Mukawa 1 , Junya Kitahara 1 , Yoshiaki Chiku 1 , Shinji Kakihara 1 , Taihei Kurenuma 1 , Masumi Wakabayashi 1 , Sayuri Shu 1 , Akira Imai 1 , Takao Hirano 1 , Toshinori Murata 1 1Department of Ophthalmology, Shinshu University School of Medicine pp.1387-1392
Published Date 2022/10/15
DOI https://doi.org/10.11477/mf.1410214528
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Abstract Purpose:To evaluate the short-term postoperative results and complications of iStent inject W and Microhook trabeculotomy(μLOT).

Subjects and Method:This retrospective study included 70 eyes of 59 patients who had undergone phacoemulsification combined with either iStent inject W or μLOT as the first glaucoma surgical intervention from January 2019 to June 2021 and had been followed-up for more than 3 months. The preoperative and postoperative intraocular pressure(IOP), medication score, and complications were evaluated.

Results:The mean age of the patients was 76.3±7.0 years in the iStent inject W group and 68.3±12.0 years in the μLOT group. The IOP measured preoperatively and at 1 month, 3 months, and 6 months postoperatively were 14.6±3.6 mmHg, 11.2±2.6 mmHg, 10.6±3.3 mmHg, and 10.9±3.0 mmHg, respectively, in the iStent inject W group(1st, 3rd, 6th month after surgery, p<0.001, Dunnett's test), and 15.6±4.5 mmHg, 10.7±3.2 mmHg, 10.1±2.7 mmHg, and 10.0±2.6 mmHg, respectively, in the μLOT group(1st, 3rd, 6th month after surgery, p<0.001;Dunnett's test). Regarding complications, niveau-forming hyphema occurred in 1 eye(3%)in the iStent inject W group and in 9 eyes(25%)in the μLOT group, and it was significantly less frequent in the iStent inject W than in the μLOT group(p<0.05, χ2 test).

Conclusion:Both iStent inject W and μLOT significantly lowered the postoperative IOP. The rate of postoperative hyphema was significantly lower with iStent inject W than with μLOT.


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