摘要
目的研究不同程度糖尿病性黄斑水肿(DME)患者的光学相干断层扫描(OCT)和多焦视网膜电图(mfERG)的特征。方法对正常人35例(35只眼)及确诊糖尿病视网膜病变(DR)合并临床显著黄斑水肿(CSME)的患者40例(57只眼)进行多焦视网膜电图和光学相干断层扫描检查。根据OCT检查结果,将患者按黄斑中心凹厚度检查结果分为轻、中、重3组。用独立样本t检验将糖尿病性黄斑水肿组与正常对照组的mfERG各反应值进行比较,运用一元相关性分析研究糖尿病性黄斑水肿组mfERG各反应值与黄斑中心凹厚度之间是否存在相关关系。结果与正常组比较,轻度DME的N,波振幅密度在环4[(14.67±4.91)nV·deg^-2]、环5[(11.65±3.89)nV·deg^-2]显著下降(t=2.179,2.529;P〈0.05),P,波潜伏期在环3[(40.61±4.10)m8]有明显延迟(t=-2.133,P〈0.05);中度DME的患者的P,波振幅密度在环1[(149.50±29.01)nV·deg^-2]、环2[(59.33±25.96)nV·deg^-2]、环3[(41.83±9.78)nV·deg^-2]、环5[(22.00±5.52)nV·deg^-2]显著下降(t=3.610,2.168,2.627,3.445;P〈0.05),N1波振幅密度在环3[(18.10±4.21)nV·deg^-2]、环4[(13.22±4.89)nV·deg^-2]、环5[(10.37±2.33)nV·deg^-2显著下降(t=2.397,2.489,2.783;P〈0.05),P,波潜伏期在环3[(42.86±4.72)m8]、环4[(44.33±5.56)ms]、环5[(46.31±4.72)ms]有明显延迟(t=-3.150,-3.210,-3.968;P〈0.05),N,波潜伏期在环3[(23.05±3.06)ms]、环4[(22.41±3.36)ms]有明显延迟(t=-2.845,-2.098;P〈0.05);重度DME的患者的P1波振幅密度在环1[(110.00±20.68)nV·deg^-2]、环2[(62.40±27.90)nV·deg^-2]、环3[(39.20±19.65)nV·deg^-2]、环5[(21.60±11.12)nV·deg^-2]显著下降(t=7.135,1.782,2.214,2.609;P〈0.05),N1波振幅密度在环1[(41.63±39.17)nV·deg^-2]、环3[(16.63±5.81)nV·deg^-2]、环4[(11.20±7.42)nV·deg^-2]、环5[(9.05±4.63)nV·deg^-2]显著下降(t=2.714,2.282,2.736,2.858;P〈0.05),P,波潜伏期在环1[(35.12±8.44)ms]、环3[(40.44±2.10)m8]、环4[(42.80±3.74)ms]有明显延迟(t=3.426,-2.710,-3.120;P〈0.05),N,波潜伏期在环4[(23.36±4.05)ms]有明显延迟(t=-2.572;P〈0.05)。结论随着DME的加重,中度和重度DME患者的黄斑中心凹厚度与mfERG反应值有显著相关性,mfERG联合OCT检查可客观、定量的反映黄斑区形态结构及功能的改变。(中华腠科杂志,2011,47:709—714)
Objective To investigate the characters of muhifocal electroretinogram (mfERG) in different grades of diabetic macular edema defined by optical coherence tomography ( OCT). Methods MfERG and OCT were performed in 57 eyes of diabetic macular edema (DME) patients and 35 eyes of the control group. According to the macular thickness measured by OCT, eyes with DME were divided into three groups: mild, moderate and severe DMEs. Results In mild DME, the response densities of N1 were attenuated in ring 4 [ ( 14. 67 ±4. 91 ) nV · deg^-2 ] to ring 5 [ ( 11.65 ± 3.89) nV · deg^-2 ] respectively ( t = 2. 179,2. 529; P 〈 0. 05). The latencies of P1 was prolonged significantly in ring 3 [ (40. 61 ± 4. 10)ms] (t = -2. 133 ,P 〈0.05). In moderate DME , the response densities of P1 and N1 were attenuated in ring 1 [ ( 149. 50 ±29. 01 ) nV · deg^-2 ], ring 2 [ (59. 33 ±25.96) nV · deg^-2 ], ring 3 [ (41.83 ±9.78 ) nV · deg^-2 ], and ring 5 [ ( 22.00 ± 5. 52 ) nV· deg^-2 ] respectively ( t = 3. 610,2. 168,2. 627,3.445 ; P 〈 0. 05 ). The latencies of P1 and N1 were prolonged signifieantly in ring 3 [ ( 42. 86± 4. 72 ) ms ], ring 4 [(44.33±5.56)ms], ring5[(46.31±4.72)ms] (t= -3. 150, -3.210,-3.968;P〈0.05) and ring 3 [ (23.05 ±3.06) ms ], ring 4 [ ( 22. 41 ± 3.36) ms ] ( t = - 2. 845, - 2. 098 ; P 〈 0. 05 ) respectively. In severe DME. The response densities of PI and N1 were attenuated in ring 1 [ (110.00 + 20.68)nV · deg^-2 ], ring 2 [ (62.40 ± 27.90) nV · deg^-2 ], ring 3 [ ( 39. 20 ±19.65 ) nV · deg^-2 ], ring 5 [ (21.60 ± 11. 12)nV · deg^-2 ] (t =7.135,1.782,2.214,2.609;P〈0.05) and ring 1[(41.63 ±39.17)nV · deg^-2 ], ring3[(16.63 ±5.81)nV · deg^-2 ], ring 4[(11.20±7.42)nV · deg^-2 ], ring 5[(9.05 ± 4. 63)nV · deg^-2 ] (t = 2. 714,2. 282,2. 736,2. 858;P 〈 0. 05 ) respectively. The latencies of P1 and N1 were prolonged signifieantly in ring 1 [ (35.12 ±8.44)ms], ring 3[ (40. 44 ±2. 10) ms], ring 4[ (42. 80 ± 3.74)ms] (t=3.426,-2.710,-3.120;P〈0.05) and ring 4 [ ( 23. 36 ± 4. 05 ) ms ] (t= -2.572;P〈 0. 05) respeetively. Conclusion As the progress of DME, the thiekness of maeular fovea had significant correlation with responses of muhifocal electroretinogram in patients with moderate or severe DME. MfERG combined with OCT ean evaluate the changes of morphology and local retinal function in maeula area objeetively and quantitatively. (Chin J Ophthalmol , 2011,47: 709-714 )
出处
《中华眼科杂志》
CAS
CSCD
北大核心
2011年第8期709-714,共6页
Chinese Journal of Ophthalmology