Incidence and risk factors of early transient intraocular pressure elevation after canaloplasty for primary open-angle glaucoma

J Zhejiang Univ Sci B. 2023 Apr 15;24(4):366-370. doi: 10.1631/jzus.B2200485.
[Article in English, Chinese]

Abstract

Glaucoma is one of the most common optic neuropathies, featuring progressive retinal ganglion cell damage and visual field loss (Tham et al., 2014; Xu et al., 2020). Currently, the only effective treatment for this condition is the reduction of intraocular pressure (IOP) (Palmberg, 2001; Heijl et al., 2002). Canaloplasty is a proven bleb-independent surgery with good efficacy and safety profiles in primary open-angle glaucoma (POAG) (Gołaszewska et al., 2021). However, early transient postoperative IOP elevation has been reported in up to 30% of cases (Riva et al., 2019), similar to that commonly observed in other internal drainage glaucoma surgeries such as implantation using iStent (0%-21.0%), CyPass (10.8%), and Hydrus (4.8%-6.5%) (Lavia et al., 2017). This complication may be a predictor of poor reserve in the outflow system and is potentially associated with surgical failure. Nonetheless, the exact pathophysiology of glaucoma remains unknown, and studies clarifying the risk factors for postoperative IOP elevation have been scarce.

为分析原发性开角型青光眼(primary open-angle glaucoma,POAG)黏小管成形术后早期短暂性高眼压的发生率及危险因素,本研究纳入了本院顺利完成360°黏小管成形术的POAG患者。我们收集了以下数据:术后各随访时间点眼压(intraocular pressure,IOP),术后早期是否发生短暂性高眼压(定义:术后1周至3月内IOP>21 mmHg但能回落至≤21 mmHg)及术后一周最低IOP(IOPmin-1w)。根据是否发生术后早期短暂性高眼压,将其分为正常眼压组(normal IOP,NIOP)和短暂性高眼压组(high IOP,HIOP)。此外,我们也对术后早期短暂性高眼压的相关危险因素进行了分析。最终来自57位患者的57只眼纳入分析。他们的平均视野缺损值(mean defect, MD)为(-15.57±10.13) dB,IOP由术前 (29.43±10.27) mmHg显著降低至术后1年的(14.73±3.60) mmHg(P<0.01)。其中,20只眼发生HIOP(35.1%)。HIOP组的IOPmin-1w显著高于NIOP组(P<0.01),并与较低的1年完全成功率相关。本研究结果提示POAG中黏小管成形术后HIOP组患者可能IOPmin-1w较高,1年手术效果较差,且IOPmin-1w≥12 mmHg可能是HIOP发生的独立危险因素。.

为分析原发性开角型青光眼(primary open-angle glaucoma,POAG)黏小管成形术后早期短暂性高眼压的发生率及危险因素,本研究纳入了本院顺利完成360°黏小管成形术的POAG患者。我们收集了以下数据:术后各随访时间点眼压(intraocular pressure,IOP),术后早期是否发生短暂性高眼压(定义:术后1周至3月内IOP>21 mmHg但能回落至≤21 mmHg)及术后一周最低IOP(IOPmin-1w)。根据是否发生术后早期短暂性高眼压,将其分为正常眼压组(normal IOP,NIOP)和短暂性高眼压组(high IOP,HIOP)。此外,我们也对术后早期短暂性高眼压的相关危险因素进行了分析。最终来自57位患者的57只眼纳入分析。他们的平均视野缺损值(mean defect, MD)为(-15.57±10.13) dB,IOP由术前 (29.43±10.27) mmHg显著降低至术后1年的(14.73±3.60) mmHg(P<0.01)。其中,20只眼发生HIOP(35.1%)。HIOP组的IOPmin-1w显著高于NIOP组(P<0.01),并与较低的1年完全成功率相关。本研究结果提示POAG中黏小管成形术后HIOP组患者可能IOPmin-1w较高,1年手术效果较差,且IOPmin-1w≥12 mmHg可能是HIOP发生的独立危险因素。

MeSH terms

  • Glaucoma, Open-Angle* / surgery
  • Humans
  • Incidence
  • Intraocular Pressure*
  • Risk Factors
  • Treatment Outcome