University Eye Hospital, Glaucoma Department, University Clinical Center of Serbia, Belgrade, Serbia.
Indian J Ophthalmol. 2022 Oct;70(10):3607-3609. doi: 10.4103/ijo.IJO_374_22.
The study was conducted to determine the ocular pulse amplitude (OPA) changes, measured with a dynamic contour tonometer (DCT), after surgical retinal detachment repair.
This was a prospective and comparative study. Thirty patients (30 eyes) who had undergone uncomplicated unilateral scleral buckling and encircling procedures for quadrant or half-retinal rhegmatogenous retinal detachment were referred for DCT one day before the surgery was performed, on the 1, 7, and 30 postoperative day. Methods of descriptive (arithmetical mean, standard deviation) and analytical statistics (analysis of variance) were used to analyze the data and evaluate the significance of the difference. A value of P less than 0.05 was considered statistically significant. The data were evaluated for normality with the single-sample Kolmogorov-Smirnov test.
OPA values decreased significantly after scleral buckling procedures (p < 0.0001), but regained near to preoperative values one month after the surgery.
OPA tends to decrease after retinal detachment surgery. Restoring patients' vision with scleral buckling and encircling procedures gives early changes in blood supply to the choroid and ocular nerve, and since OPA is an indirect parameter of choroidal vascularization, measuring these values can help make an insight into ocular hemodynamics.
本研究旨在探讨应用动态轮廓眼压计（DCT）测量视网膜脱离修复术后眼脉冲振幅（OPA）的变化。
这是一项前瞻性、对照研究。30 例（30 只眼）接受单纯巩膜扣带术和环扎术治疗象限或半视网膜孔源性视网膜脱离的患者，于术前 1 天、术后第 1、7 和 30 天接受 DCT 检查。采用描述性（算术平均值、标准差）和分析性统计（方差分析）方法对数据进行分析，并评估差异的显著性。P 值小于 0.05 被认为具有统计学意义。采用单样本 Kolmogorov-Smirnov 检验评估数据的正态性。
巩膜扣带术后 OPA 值显著降低（p < 0.0001），但术后 1 个月接近术前水平。
视网膜脱离手术后 OPA 倾向于降低。巩膜扣带和环扎术恢复患者视力会引起脉络膜和眼神经血供的早期变化，由于 OPA 是脉络膜血管化的间接参数，测量这些值有助于深入了解眼血流动力学。
