Incidence and Risk Factors for Ciliochoroidal Detachment Following Preserflo MicroShunt Implantation.

PRCIS: Short axial length and postoperative hypotony are significantly associated with ciliochoroidal detachment following Preserflo MicroShunt implantation.

PURPOSE: This study investigated the incidence and associated factors of ciliochoroidal detachment (CCD) following Preserflo MicroShunt (PFM) implantation.

MATERIALS AND

METHODS

PFM implantation, with or without combined cataract surgery, was performed on 83 eyes from August 2023 to June 2024. CCD was evaluated using anterior segment optical coherence tomography on postoperative day 1, and at 1 week, 1 month, 2 months, and 3 months. Multiple logistic regression was used to identify associated factors with the development of CCD.

RESULTS

CCD occurred in 56 of 83 eyes (67.5%). CCD was observed in 48 eyes (57.8%) on day 1, 53 eyes (63.9%) at 1 week, 18 eyes (21.7%) at 1 month, 4 eyes (4.8%) at 2 months, and 1 eye (1.2%) at 3 months. Intraocular pressure (IOP) (mm Hg) was significantly lower in eyes with CCD than in those without CCD at all time points except at 2 months: 5.9±2.9 vs. 8.3±5.0 ( P =0.008) on day 1; 6.8±3.2 vs. 9.9±7.0 ( P =0.02) at 1 week; 7.9±4.4 vs. 11.6±5.7 ( P =0.001) at 1 month; 7.0±4.1 vs. 11.4±4.8 ( P =0.055) at 2 months; and 2.0 vs. 11.6±4.0 ( P =0.045) at 3 months. The short axial length ( P =0.005) and postoperative hypotony (IOP ≤6 mm Hg) ( P =0.03) were significantly associated with CCD.

CONCLUSION

CCD is common after PFM implantation. Short axial length and postoperative hypotony are significant risk factors.