应用激光扫描偏振仪观察青光眼患者视网膜神经纤维层厚度变化  

Detection of the changes of retinal nerve fiber layer thickness by GDx-VCC laser scanning polarimetry in primary open angle glaucoma patients

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作  者:王铮[1] 刘小伟[2] 李晓宇[1] 张文菊[1] 戴虹[1] 

机构地区:[1]卫生部北京医院眼科,100730 [2]中国医学科学院北京协和医学院北京协和医院眼科

出  处:《中华眼科杂志》2012年第6期497-501,共5页Chinese Journal of Ophthalmology

摘  要:目的研究GDx-VCC系统监测不同程度原发性开角型青光眼视野损害和视网膜神经纤维层(RNFL)厚度连续性变化的可行性。方法回顾性病例系列研究。应用GDx-VCC系统和Octopus视野计,检测122例(122只眼)原发性开角型青光眼患者的RNFL厚度和视野平均缺损(MD)值,并随诊观察24个月的连续性变化。其中早期青光眼组患者60例(60只眼),中期青光眼组患者32例(32只眼),晚期青光眼组患者30例(30只眼)。组内患者不同随诊时间的视野MD值、RNFL厚度比较采用重复测量资料的方差分析,组间患者不同随诊时间的视野MD值、RNFL厚度比较采用单因素方差分析。结果随诊前,早期、中期及晚期青光眼组患者的视野MD值分别为(1.93±1.66)、(5.83±1.95)及(14.62±3.53)dB;平均RNFL厚度分别为(53.72±8.07)、(49.73±7.16)及(41.42±8.30)Ixm;组间视野MD值和平均RNFL厚度差异均有统计学意义(F=428.99,21.32;P〈0.05)。随诊24个月,3组患者平均RNFL厚度分别降至(50.43±7.08)、(45.47±6.50)、(37.62±7.28)μm,厚度变化差异有统计学意义(F=21.39,18.65,16.63;P〈0.05);其中早期青光眼组患者下方RNFL厚度从(61.854-9.77)斗m降至(54.35±7.47)μm,中期青光眼组患者上方RNFL厚度从(55.67±9.50)μm降至(49.75±9.54)μm,厚度变化最为显著,差异均有统计学意义(F=30.25,31.72;P〈0.05)。而早、晚期青光眼组患者的视野MD值变化均无统计学意义(F=2.03,1.40;P〉0.05),仅中期青光眼组患者的视野MD值从(5.83±1.95)dB增至(7.24±2.17)dB,MD值变化差异有统计学意义(F=9.47,P〈0.05)。结论GDx—VCC系统可以精确监测青光眼患者RNFL厚度的连续性变化,可以作为早、中期青光眼患者随访的有效手段之一。Objective To evaluate the changes of visual field and retinal nerve fiber layer (RNFL) thickness during 24 months follow up in primary open-angle glaucoma (POAG) patients. Methods In this retrospective case series study, visual field and RNFL were detected by using GDx-VCC system and Octopus perimeter in 60 patients with POAG in early stage (60 eyes), 32 in moderate stage (32 eyes) and 30 in advanced stage (30 eyes). The parameters of the RNFL thickness and mean defect (MD) of the visual fields were recorded and analyzed by repeated measures analysis of variance among the same group and by one-factor analysis of variance for different stages of POAG groups at each time of follow-up. Results The baseline MD of visual field in POAG was ( 1.93 ± 1.66) dB in early group, (5.83 ± 1.95 ) dB in moderate group and ( 14. 62 ± 3.53 ) dB in advanced group, respectively. At 24 months, MD in POAG was significant (F =9. 47, P 〈0. 05) increased to(7. 24 ±2. 17)dB in moderate group, but not in other two groups ( F = 2.03, 1.40;P 〉 0.05). Compared with baseline of total average RNFL thickness in POAG at temporal- superior-nasal-inferior-temporal [ TSNIT : (53.72 -± 8.07 ) μm, (49. 73 ± 7. 16 ) μm, and ( 41.42 ± 8.30) μm in each group, respectively ], RNFL thickness in each group was significant (F = 21.39, 18. 65,16. 63; P 〈 0. 05 ) decreased ( 50.43 ± 7.08 ) μm, (45.47 ± 6. 50 )μm, and ( 37.62 ± 7.28 ) μm (respectively) at 24 months. The inferior RNFL was significantly ( F = 30. 25, P 〈 0. 05 ) reduced from ( 61.85 ± 9. 77 ) μm to(54. 35 ±7.47)txm in early stage group, while the superior RNFL was changed more dramatically from (55.67 ±9. 50) μm to (49. 75 -±9.54) μm in moderate stage group (F =31.72, P 〈0. 05). Both baselines of MD and RNFL thickness were significantly different in each group ( F = 428.99,21.32 ; P 〈 0.05 ). Conclusions Our results demonstrate that GDx-VCC system is use

关 键 词:青光眼 开角型 视网膜神经纤维 激光扫描偏振测量法 视野 诊断技术 眼科 

分 类 号:R775[医药卫生—眼科]

 

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