F. Shaheen, Hashim Ali Khan, Farooq Afzal, Muhammad Amer Awan
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引用次数: 0
摘要
目的:评估平均眼球灌注压对视网膜脱离(RD)手术成功眼的眼窝无血管区(FAZ)面积的影响。方法:采用前瞻性试验性同工眼对照方法:这项前瞻性试验性同胞眼对照研究测量了流变性视网膜脱离(RRD)手术眼的术中平均眼球灌注压。术后测量FAZ面积,并以手术眼与对侧对照眼FAZ面积之差计算其变化。研究结果本研究共有 8 名患者,平均年龄(±SD)为 53.38±13.92 岁。手术眼和对照眼的平均浅层 FAZ 面积没有差异,而手术眼的深层 FAZ 面积明显更大。平均眼球灌注压与FAZ深层面积的变化之间存在很强的负相关(Spearman ρ,-0.73;P = .04);平均眼球灌注压与FAZ浅层面积的变化之间的相关性不显著(Spearman ρ,-0.24;P = .57)。平均眼球灌注压与深层 FAZ 面积变化之间存在明显的线性回归关系(R2 = 0.388)。平均眼球灌注压每降低 1 mm Hg,深 FAZ 面积的预测增大值为 0.03 mm。结论:在成功进行 RRD 手术的眼球中,术中平均眼球灌注压降低与 FAZ 深部面积扩大有关。
Mean Ocular Perfusion Pressure Effect During Pars Plana Vitrectomy on the Foveal Avascular Zone: A Pilot Study
Purpose: To evaluate the effect of mean ocular perfusion pressure on the foveal avascular zone (FAZ) area in eyes with successful retinal detachment (RD) surgery. Methods: This prospective pilot fellow eye–controlled study measured the intraoperative mean ocular perfusion pressure in eyes having surgery for rhegmatogenous RD (RRD). Postoperatively, the FAZ area was measured; the change was calculated as the difference in the FAZ area between the operated eye and the contralateral control eye. Results: The study comprised 8 patients with a mean age (±SD) of 53.38 ± 13.92 years. The mean superficial FAZ area was not different between operated eyes and control eyes, while the deep FAZ area was significantly larger in operated eyes. There was a strong negative correlation between the mean ocular perfusion pressure and the change in the deep FAZ area (Spearman ρ, −0.73; P = .04); the correlation between the mean ocular perfusion pressure and the change in the superficial FAZ area was not significant (Spearman ρ, −0.24; P = .57). A significant linear regression was found between the mean ocular perfusion pressure and the change in the deep FAZ area (R2 = 0.388). The predicted enlargement of the deep FAZ area was 0.03 mm with every 1 mm Hg decrease in the mean ocular perfusion pressure. Conclusion: Lower intraoperative mean ocular perfusion pressure is associated with enlargement of the deep FAZ area in eyes having successful RRD surgery.