Finzi Alessandro, Strobbe Ernesto, Tassi Filippo, Fresina Michela, Cellini Mauro
Department of Specialized, Diagnostic and Experimental Medicine, Ophthalmology Service, University of Bologna, Bologna, Italy.
Clin Ophthalmol. 2014 Sep 22;8:1929-36. doi: 10.2147/OPTH.S67193. eCollection 2014.
To assess the sensitivity and specificity of hemifield pattern electroretinogram (HF-PERG) for detecting early retinal ganglion cell (RGC) damage in ocular hypertensive (OH) patients.
Fifty-two OH patients (mean age 56±9.6 years) with an intraocular pressure (IOP) .21 mmHg were assessed. All subjects underwent HF-PERG, optical coherence tomography (OCT), and frequency doubling technology (FDT) visual field.
OH patients showed a significant increase of peak-time of the N95 (P=0.027) compared to controls. The amplitude of the N95 of the lower and upper HF-PERG showed significant differences (P=0.037 and P=0.023, respectively) between the two groups. A significant intraocular (P=0.006) and interocular (P=0.018) asymmetry of N95 amplitude was found. Receiver operating characteristic (ROC) curve analysis revealed a sensitivity of 93% for the N95 of the lower HF-PERG, whereas full-field pattern electroretinogram (PERG) N95 peak-time had a sensitivity of 88%. In OH patients, we found a thinning of OCT - retinal nerve fiber layer (RNFL), especially in the superior and inferior quadrant, although not statistically significant, and a significantly higher FDT pattern standard deviation (FDT-PSD; P=0.001). In the OCT-RNFL inferior quadrant, a sensitivity of 82% was recorded. Finally, the sensitivity of the FDT-PSD was 92%.
Our study shows that HF-PERG is a very sensitive test for detecting early damage of the RGC.
评估半视野图形视网膜电图(HF-PERG)检测高眼压(OH)患者早期视网膜神经节细胞(RGC)损伤的敏感性和特异性。
对52例眼压(IOP)>21 mmHg的OH患者(平均年龄56±9.6岁)进行评估。所有受试者均接受HF-PERG、光学相干断层扫描(OCT)和频率加倍技术(FDT)视野检查。
与对照组相比,OH患者N95的峰时显著增加(P = 0.027)。两组之间,下、上HF-PERG的N95振幅存在显著差异(分别为P = 0.037和P = 0.023)。发现N95振幅存在显著的眼内(P = 0.006)和眼间(P = 0.018)不对称。受试者操作特征(ROC)曲线分析显示,下HF-PERG的N95敏感性为93%,而全视野图形视网膜电图(PERG)N95峰时的敏感性为88%。在OH患者中,我们发现OCT - 视网膜神经纤维层(RNFL)变薄,尤其是在上下象限,尽管无统计学意义,且FDT图形标准差(FDT-PSD)显著更高(P = 0.001)。在OCT-RNFL下象限,记录到的敏感性为82%。最后,FDT-PSD的敏感性为92%。
我们的研究表明,HF-PERG是检测RGC早期损伤的非常敏感的检查。