原发性慢性闭角型青光眼HRT-Ⅱ视盘参数和视野缺损的关系

目的探讨原发性慢性闭角型青光眼视盘参数和视野缺损之间的关系。方法用海德堡视网膜断层扫描仪和Humphrey自动视野计测定30例(44眼)原发性慢性闭角型青光眼患者的视盘参数(视盘面积、视杯面积、盘沿面积、视杯容积、盘沿容积、杯/盘面积、平均杯深、最大杯深、视杯形态测量、平均神经纤维层厚度、平均神经纤维层面积)和视野平均缺损。视盘参数与视野平均缺损作相关分析和多元线性回归分析。结果盘沿面积、视杯容积、杯/盘面积、视杯形态测量、平均神经纤维层厚度与视野平均缺损呈直线相关,并建立回归方程,Y=-13.012 5.064X1(Y表示平均缺损,X1表示盘沿面积),本研究没有发现其他参数与平均缺损相关关系的显著性。结论盘沿面积、视杯容积、杯/盘面积、视杯形态测量、平均神经纤维层厚度在海德堡视网膜断层扫描仪众多参数中最能反映青光眼的视野平均缺损程度。盘沿面积、视杯容积、杯/盘面积、视杯形态测量、平均神经纤维层厚度可用于慢性闭角型青光眼视神经损害监测。     

海德堡视网膜断层扫描仪在开角型青光眼视盘检测中的意义

目的 探讨海德堡视网膜断层扫描仪(HRT)检测开角型青光眼视盘参数与视野损害的关系。评价HRT在早期诊断青光眼中的意义。方法 正常人26例(41只眼)，高眼压11例(16只眼)、原发性开角型青光眼28例(38只眼)。采用Humphrey全自动视野计、HRT分别进行视野、视盘形态检测。比较正常组、高眼压组、青光眼组HRT视盘检测参数．分析青光眼组视野检测的平均缺损(MD)与HRT视盘检测参数的关系。结果 正常组、高眼压组、青光眼组视杯面积、杯／盘面积比、盘沿面积、视杯形态测量指数、视网膜神经纤维层厚度差异有显著性。青光眼组的盘沿面积、杯／盘面积比、视杯形成测量指数、视网膜神经纤维层厚度与视野检测的平均缺损有显著相关。结论 HRT能够反映青光眼视盘改变，为临床早期诊断青光眼提供更多的信息。     

国际闭角型青光眼新分类中Humphrey视野及HRT-Ⅱ参数的相关性

目的:分析海德堡视网膜断层扫描仪-II(HRT-II)和Hum-phrey视野计检查平均视野缺损(mean defect,MD)间的相关性及其临床价值。方法:闭角型青光眼患者69例117眼,按照国际闭角型青光眼分类法分为可疑原发性房角关闭(primary angle-clo-sure suspect,PACS)38眼,原发性前房角关闭(Primary an-gle-closure,PAC)53眼和原发性闭角型青光眼(primary angle-closure glaucoma,PACG)26眼,利用HRT-Ⅱ和Hum-phrey视野计检查正常人30例60眼和各类闭角型青光眼患者的视盘形态、视网膜神经纤维层(RNFL)厚度和视野,获得视杯面积、视盘面积、盘沿面积、视杯容积、盘沿容积、杯盘面积比、线性杯盘比、平均视杯深度、最大视杯深度、视杯形态测量、视杯高度变异轮廓、平均视网膜神经纤维层厚度、视神经纤维层横截面积和MD等参数,对比分析正常人和各类闭角型青光眼患者之间的各参数的差异。并将各类闭角型青光眼的HRT-Ⅱ的各参数与MD进行相关性分析。结果:HRT-Ⅱ和Humphrey视野计检测对照组与PACS、PAC和PACG4组间各视盘参数和MD差异具有统计学意义(P<0.01)。对照组中LCD和MD呈直线相关,PACS组中DA、CA和MD呈直线相关,PAC中CA,RA,CV,CDAR,HVC和MD呈直线相关。经逐步回归筛选的变量中,CV和HVC是其中2个有意义的参数,PAC组中CV和HVC与MD之间的Pearson相关系数为0.290和0.301,得出CV和HVC与MD之间回归方程:Y=4.475X1+5.338X2-0.480(Y表示MD,X1表示CV,X2表示HVC)。结论:HRT-II和Humphrey视野检查参数在新的闭角型青光眼分类具有一定的临床价值,MD与CV和HVC相互参照分析有助于判断闭角型青光眼的发展。     

原发性开角型青光眼 HRT 视盘参数与视野缺损计分的关系

目的探讨原发性开角型青光眼(primary open an-gle glaucoma,POAG)病例的海德堡视网膜断层扫描仪(Hei-delberg retinal tomoscanner,HRT-Ⅱ)视盘参数与视野缺损计分的关系。方法对29例(30眼)POAG患者采用HRT-Ⅱ进行视盘检测;采用Humphrey视野计进行视野检查,运用AGIS计分系统并稍加改动对视野缺损情况进行计分,HRT参数包括视盘面积、视杯面积、盘沿面积、视杯容积、杯盘面积比、线性杯/盘比、平均视杯深度、视盘最大深度、平均视网膜神经纤维层厚度、视杯形态测量,将HRT视盘参数与视野计分进行相关统计学处理。结果HRT视盘参数中盘沿面积、视杯容积、杯盘面积比、平均视网膜神经纤维层厚度、视杯形态测量与视野缺损计分有直线相关关系。对视盘参数与视野计分进行逐步回归筛选变量时盘沿面积被选入,建立回归方程Y=12.351-5.123X(Y表示视野缺损计分,X表示盘沿面积)。结论POAG的视盘参数中盘沿面积与视野缺损计分关系最密切,视野缺损计分能对视野损害程度进行准确量化。     

原发性青光眼早期视盘参数与视野缺损的关系

目的 探讨应用海德堡视网膜断层扫描仪(HRT-Ⅱ)检测原发性青光眼患者视盘参数改变及其与Humphrey 750检测视野改变间的关系.方法 49例原发性青光眼患者和30例对照个体分别行Humphrey 750视野与HRT-Ⅱ检查,每例患者的双眼间视盘损害与视野缺损间的对应关系彼此独立,双眼均被纳入研究.比较对照个体、慢性闭角型青光眼(CACG)、开角型青光眼(POAG)和正常眼压性青光眼(NTC)患者视乳头参数的差异,分析视乳头各项参数分别与各自视野指数(MD)间的相关性.将对照个体与原发性青光眼患者的视盘参数进行逐步判别分析,建立判别函数,筛选出诊断青光眼的敏感参数.结果 HRT-Ⅱ和Humphrey 750检测对照组、CACG组、POAC组和NTG组四组间视野平均缺损(1VID)、视杯面积(CA)、视盘面积(DA)、盘沿面积(RA)、视杯容积(CV)、盘沿容积(RV)、杯盘面积比(CDAR)、线性杯盘比(LCDR)、平均视杯深度(MCD)、最大视杯深度(max CD)、视杯形态(CSM)、视杯高度变异轮廓(HVC)、平均视网膜神经纤维层厚度(MRNFLT)、视神经纤维层横截面积(RCSA)等差异具有显著统计学意义(P<0.01).对照组中LCDR和MD呈直线线性相关,POAG组中DA、CA和MD呈直线线性相关,NTG组中CA、RA、CV、CDAR、HVC和MD呈直线线性相关.经逐步回归筛选的变量中,CV和HVC是其中2个有意义的参数,得出回归方程MD=4.475×CV+5.338×HVC-0.480.诊断敏感的视盘参数为RA、RV、MRNFLT、CSM、HVC,判别函数式为D=2.767+0.312×RA +3.731×RV+4.294×MRNFLT-3.668×CSM-4.024×HVC.结论 临床上应用HRT-Ⅱ检测视盘参数与Humphrey750检测视野结果结合对照分析有助于原发性青光眼的早期诊断.     

原发性开角型青光眼HRT视盘参数和视野缺损的关系

目的 :探讨原发性开角型青光眼视盘参数和视野平均缺损之间的关系。方法 :用海德堡视网膜断层扫描仪和自动视野计测定 5 5名原发性开角型青光眼患者的视盘参数 (杯盘面积比、盘沿面积、盘沿容积、视杯容积、视杯形态测量、视杯高度变异轮廓和平均神经纤维层厚度 )和静态光阈值。视盘参数与视野平均缺损作相关分析和多元线性回归分析。结果 :盘沿面积与平均缺损显著相关 (r =0 3 5 0 ,P <0 0 5 )。盘沿面积每减少 1mm2 ,视野缺损绝对值增加 8 0 81dB。本研究没有发现其它 6个参数与平均缺损相关关系的显著性。结论 :盘沿面积在HRT众多参数中最能反映青光眼的视野平均缺损程度。     

大视杯与早期青光眼视盘形态的对比研究

目的了解海德堡视网膜断层扫描(HRT-Ⅱ)视盘参数对青光眼早期视盘变化的灵敏性。设计横断面调查研究。研究对象 21例(36眼)生理性大视杯(C／D≥0．7)和27例(31眼)早期青光眼(C／D≥0.7、MD≤3dB)。方法对所有入选的患者进行视野及HRT-Ⅱ检测,对两组患者的视盘诸参数进行比较。主要指标 HRTⅡ检测的视盘诸参数,包括视盘面积、视杯面积、盘沿面积、视杯容积、盘沿容积、杯盘面积比、平均视杯深度、最大视杯深度、视杯形态测量、视杯高度变异轮廓、平均视网膜神经纤维层(RNFL)厚度和视神经纤维层横断面积。结果 HRTⅡ参数中,生理性大视杯组的盘沿面积、盘沿容积、平均RNFL厚度、RNFL 横断面积的值比早期青光眼组大,差异有显著性(t=2．247-3．714,P=0.000-0．028)。结论在鉴别早期青光眼与生理性大视杯时, 应重点关注上述HRT-Ⅱ参数。     

HRT视盘参数在原发性开角型青光眼早期诊断中的作用

目的:在众多海德堡视网膜断层扫描仪(heidelberg retina tomogragh,HRT)测定的视盘参数中,筛选出最有助于青光眼早期诊断的视盘参数。方法:用HRT测定23例视野损害较轻的青光眼患者和23例正常人的视盘参数(杯盘面积比、盘沿面积、盘沿容积、视杯容积、视杯形态测量、视杯高度变异轮廓和平均神经纤维层厚度)作逐步判别分析。结果:盘沿面积和杯盘面积比对青光眼早期诊断最有帮助,其诊断敏感度和特异度分别为87%和96%。结论:本组资料盘沿面积和杯盘面积比是区分青光眼和正常眼最好的判别因素。     

海德堡激光眼底扫描仪对POAG患者视盘结构的研究分析

目的:评价海德堡激光眼底扫描仪(HRT-Ⅲ)对原发性开角型青光眼(primary open angle glaucoma,POAG)不同发展阶段的诊断能力。方法:采用海德堡激光眼底扫描仪对POAG患者65例116眼和正常人60例114眼进行视盘断层扫描获取视盘结构各参数;将正常人和POAG患者以及各期POAG患者的视盘参数进行对比分析;将POAG患者的视盘结构参数与视野平均缺损值进行相关分析。结果:POAG患者与正常人的视杯面积、盘沿面积、视杯容积、盘沿容积、杯盘面积比、盘沿视盘面积比、线性杯盘比、平均视杯深度、最大视杯深度、平均RNFL厚度的差异有统计学意义。早期、进展期、晚期POAG患者的视杯面积、盘沿面积、视杯容积、盘沿容积、杯盘面积比、盘沿视盘面积比、线性杯盘比、平均视杯深度、平均视网膜神经纤维层(retinal nerve fiber layer,RNFL)厚度的差异有统计学意义。POAG患者的视杯面积、视杯容积、杯盘面积比、线性杯盘比、平均视杯深度与视野平均缺损值呈正相关,而盘沿面积、盘沿容积、盘沿视盘面积比、平均RNFL厚度则与视野平均缺损值呈负相关。结论:HRTⅢ能够有效地反映POAG各阶段的视盘改变,与视野相关性好,为POAG的诊断提供了依据。     

原发性开角型青光眼和可疑开角型青光眼HRT视盘参数与视野缺损的相关性研究

目的探讨原发性开角型青光眼和可疑性开角型青光眼的视盘参数与视野平均缺损（Mean defect，MD）之间的相关性。方法用海德堡激光眼底扫描仪（HRT—Ⅱ）和自动视野计测定128只原发性开角型青光眼和78只可疑性开角型青光眼患者的视盘参数和静态视网膜光阈值。从视盘参数中选择盘沿面积（rim area，RA）、杯盘面积比（cup／disk area ratio，C/D AR）、视杯面积（cup area，CA）和平均视网膜神经纤维层厚度（mean retinal nerve fibre layer thickness，mRNFLT）与MD作相关分析和多元线性回归分析。结果两组间的视盘参数存在显著性差异（P〈0．001）。在原发性开角型青光眼组，RA、C/D AR和CA与MD之间均显著相关（P〈0．001）。其中盘沿面积每减少1mm^2，MD的绝对值将增加7．291dB；在可疑性开角型青光眼组，RA与MD之间显著相关（P〈0．001）。两组中mRNFLT与MD无明显相关性。结论在HRT-Ⅱ的各项视盘参数中，RA最能反映青光眼的视野平均缺损程度。     

Optic nerve head topographic measurements and retinal nerve fiber layer thickness in physiologic large cups

PURPOSE: To evaluate the parameters of optic nerve head (ONH) and retinal nerve fiber layer (RNFL) in patients with large cup/disc ratio (CDR) and normal neuroretinal rim configuration who have normal perimetry (physiologic large cups, LC) and to compare these parameters with those of the normal and early glaucoma patients. METHODS: Using Heidelberg retinal tomography (HRT) and optical coherence tomography (OCT), 30 patients with LC, 29 normal subjects, and 31 early glaucoma patients were examined. One eye from each subject was randomly selected. RESULTS: Significant differences between LC and glaucomatous eyes (GE) were found in parameters indicating loss of nerve fibers, such as rim area, rim volume, and mean RNFL thickness. However, there was no difference between LC and normal eyes (NE) in RNFL thickness, rim area, and rim volume. LC was able to be defined as a normal central excavation with a large disc and large CDR with a normal rim area. CONCLUSIONS: HRT ONH parameters and RNFL thickness obtained with OCT may be useful for differentiating between glaucoma and LC eyes.     

Heidelberg retina tomography and optical coherence tomography in normal, ocular-hypertensive, and glaucomatous eyes.

PURPOSE: To evaluate optic disc and retinal nerve fiber layer (RNFL) appearance in normal, ocular-hypertensive, and glaucomatous eyes undergoing confocal scanning laser ophthalmoscopy and optical coherence tomography (OCT). DESIGN: Prospective, cross-sectional study. PARTICIPANTS: Seventy-eight eyes of 78 consecutive normal (n = 17), ocular-hypertensive (n = 23), and glaucomatous subjects (n = 38) were enrolled. METHODS: Each patient underwent complete ophthalmic examination, achromatic automated perimetry, confocal scanning laser ophthalmoscopy (Heidelberg Retinal Tomography [HRT]), and OCT. Topographic HRT parameters (disc area, cup-disc ratio, rim area, rim volume, cup shape measure, mean RNFL thickness, and cross-sectional area) and mean OCT-generated RNFL thickness were evaluated in each group. MAIN OUTCOME MEASURES: OCT and HRT assessment of optic disc and RNFL anatomy. RESULTS: OCT RNFL thickness showed no difference between normal and ocular-hypertensive eyes (P = 0.15) but was significantly less in glaucomatous eyes (P < 0.001). HRT measurements of rim area, cup-disc ratio, cup shape measure, RNFL thickness, and RNFL cross-sectional area were significantly less in glaucomatous eyes (all P < 0.005) and were correlated with mean OCT RNFL thickness (all P < 0.02). RNFL thickness using OCT or HRT was highly correlated with visual field mean defect during achromatic perimetry (P < 0.0001). CONCLUSION: Both HRT and OCT can differentiate glaucomatous from nonglaucomatous eyes. RNFL thickness measurements using OCT correspond to disc topographic parameters using HRT.     

海德堡视网膜断层扫描仪测量正常人视盘参数

目的 :建立正常人群海德堡视网膜断层扫描仪 (Heidelbergretinatomograph ,HRT)视盘参数的正常值 ,明确哪些因素对正常人HRT视盘参数有影响。方法 :选用 10 2例 (13 2只眼 )正常人 ,用HRT进行视盘扫描 ,视盘参数包括视盘面积、视杯面积和容积、盘沿面积和容积、视杯形态、视杯平均深度和最大深度、杯 /盘面积比、沿 /盘面积比、平均视网膜神经纤维层(retinalnervefiberlayer,RNFL)厚度和横截面积、水平C/D和垂直C/D。计算正常人视盘参数范围 ,用直线回归的方法判断视盘大小和年龄对视盘参数的影响。结果 :正常人左右眼和男女间视盘各参数差异无显著意义 (P >0 0 5)。年龄与RNFL厚度及横截面积呈负相关 ,相关系数分别为 -0 2 3 4和 -0 2 3 5,其余各参数与年龄无关。盘沿容积和视杯最大深度不受视盘大小的影响 ,其余各参数均与视盘大小呈线性相关。结论 :HRT可定量检测正常人视盘参数 ;正常人视盘参数变异很大 ,盘沿容积不受视盘大小的影响 ,是一个区分正常与早期青光眼的很好的参数     

频域光学相干断层扫描（OCT）测量视盘参数及视网膜厚度在早期青光眼诊断中的作用

目的　探讨频域光学相干断层扫描（optical coherence tomography,OCT）测量视盘参数及视网膜厚度在早期青光眼诊断中的作用。方法　采用频域OCT测量40例（40眼）健康志愿者（对照组）和85例（85眼）原发性开角型青光眼（primary open angle glaucoma,POAG）患者［早期青光眼亚组（n=36）和进展期青光眼亚组（n=49）］视盘参数及视网膜神经纤维层（retinal nerve fiber layer,RNFL）厚度,比较各组RNFL厚度、视盘参数并与视野平均缺损（mean deviation,MD）值进行相关性分析,采用ROC曲线下面积评估视盘周围区RNFL厚度及视盘参数在青光眼中的诊断效果。结果　POAG组患者颞侧、上方、鼻侧及下方象限RNFL厚度和全周RNFL厚度均显著低于对照组（均为P<0.05）,且与早期青光眼组比较,进展期青光眼组患者颞侧、上方、鼻侧及下方象限RNFL厚度和全周RNFL厚度均显著降低（均为P<0.05）。各组除视盘面积外,其他视盘参数比较差异均具有统计学意义（均为P<0.05）。Pearson相关性分析显示,POAG组患者视盘颞侧、上方、下方象限RNFL厚度及全周RNFL厚度与MD均呈负相关（均为P<0.05）,而视盘参数中视杯容积和视杯/视盘面积比与MD均呈正相关（均为 P<0.05）,盘缘面积、盘缘容积和视盘容积与MD均呈负相关（均为P<0.05）。经ROC曲线分析显示,视盘周围区下方象限RNFL厚度的曲线下面积最大为0.886,其特异度和敏感度分别为0.775和0.924;视盘参数中视杯/视盘面积比曲线下面积最大,其特异度和敏感度分别为0.741和0.815。结论　OCT检测视盘结构和RNFL厚度能够用于青光眼早期诊断,且具有较高敏感度和特异度。     

Correlation between blue chromatic macular sensitivity and optic disc change in early glaucoma patients]

PURPOSE: To investigate the relationship between morphological changes of the optic nerve head (ONH) and macular sensitivity(MS) determined with blue-on-yellow(B on Y) and white on white (W on W) perimetry in normal subjects and patients with glaucoma. METHODS: One randomly chosen eye was evaluated in each of 28 normal subjects, 23 patients with ocular hypertension(OH), and 23 patients with early primary open-angle glaucoma(POAG). Mean values for MS by B on Y and W on W perimetry were obtained with the macular program using a modified Humphrey Field Analyzer(HFA). The Heidelberg Retina Tomograph(HRT) with software version 2.01 was used to evaluate the topographic parameters of temporal sector in ONH. RESULTS: There was no significant difference in temporal topographic parameters of ONH among the three clinical groups. Mean values for MS of B on Y and W on W perimetry in early POAG were significantly lower than in normal subjects and OH. Mean values for MS of W on W perimetry showed no significant correlation with ONH parameters of the temporal sector. In early POAG, mean values for MS of B on Y perimetry significantly correlated with cup area, cup/disc area ratio, cup volume, and rim volume in the temporal sector of ONH. CONCLUSION: The measurement of mean MS of B on Y might be able to detect the glaucomatous optic nerve damage due to increased intraocular pressure prior to the morphological changes of ONH in early stages of glaucoma.     

高眼压性和正常眼压性原发性开角型青光眼视神经损害特征的比较

目的探讨高眼压性原发性开角型青光眼(POAG)和正常眼压性青光眼(NTG)患者视神经损害的不同特点。方法应用德国Heidelberg公司生产的视网膜断层扫描仪对高眼压性POAG39例(47只眼)和NTG32例(38只眼)进行定量视盘参数和神经纤维层检查,并行眼底立体照相观察视网膜神经纤维层(RNFL)缺损类型,检测静态定量视野,并对检查结果进行比较。结果(1)NTG组视盘总体参数和分区(除颞侧外)盘沿面积、沿/盘面积小于高眼压性POAG组,而C/D大于高眼压性POAG组;平均RNFL厚度和RNFL面积在颞下和颞上小于高眼压性POAG组;总体盘沿容积小于高眼压性POAG组,总体平均视杯深度和颞下视杯面积大于高眼压性POAG组,两组差异均有统计学意义(P<005)。两组颞侧视盘各参数比较,差异无统计学意义(P>005)。(2)RNFL缺损类型高眼压性POAG组RNFL弥漫性缺损占5319%,局限性缺损占426%;NTG组弥漫性缺损占2105%,局限性缺损占5526%。两组RNFL缺损类型构成比比较,差异有统计学意义(P<001)。结论NTG较高眼压性POAG具有较大的C/D值、C/D面积比和窄盘沿面积,RNFL丢失严重。高眼压性POAG患者的RNFL以弥漫性缺损为主,NTG患者的RNFL以局限性缺损为主。两者视神经损害具有不同特点,其损害机制可能不同。(中华眼科杂志,2005,41136140)     

视网膜断层扫描仪对正常人群视乳头形态结构参数的测定

目的 了解正常人群视乳头形态结构参数的正常值。方法 用海德堡视网膜断层扫描仪(Heidelberg retina tomography，HRT)系统对排除眼病的200只眼进行检查，按年龄分成5组，得出不同年龄人体视乳头参数的数值。结果 应用HRT系统提供的视乳头各类参数，主要有视盘面积(disk area)、视杯面积(cup area)、杯盘面积比(cup／disk area ratio)、盘缘面积(rim area)、视杯体积(cup volume)、盘缘体积(rim volume)、平均视杯深度(mean cup depth)、最大视杯深度(maximum cup depth)、视杯形状测定(cup shape measure)、轮廓线高度变化(height vari—ation contour)、平均视网膜神经纤维厚度(mean RNFL thickness)、视网膜神经纤维截面面积(RNFL cross section area)，通过统计分析，5组数值视杯面积、盘缘体积、轮廓线高度变化、平均视网膜神经纤维厚度、视网膜神经纤维层截面面积在49岁以下与50岁以上有显著差异，而49岁以下各组之间无明显差异。结论 通过比较该组数据，较以往欧美所提供的数据有所不同，该组数据较以往国内参考值亦有差别。     

Usefulness of optical coherence tomography parameters of the optic disc and the retinal nerve fiber layer to differentiate glaucomatous, ocular hypertensive, and normal eyes

PURPOSE: To assess Stratus optical coherence tomography (OCT) original parameters for identifying glaucomatous damage and to evaluate differences among glaucomatous, ocular hypertensive, and normal eyes. DESIGN: Cross-sectional prospective study. SUBJECTS AND METHODS: The study was conducted at 2 centers. The study population consisted of 55 normal individuals, 95 patients with ocular hypertension (OHT), and 79 patients with glaucoma. Retinal nerve fiber layer (RNFL) and optic nerve head OCT protocols were used to evaluate all study participants. Measurements taken were RNFL thickness, several ratios, RNFL asymmetry between both eyes, rim volume, rim width, disc area, cup area, rim area, cup/disc (C/D) area ratio, and horizontal and vertical C/D ratios. The main outcome measures were the differences in OCT parameters among groups and the areas under the receiver operating characteristic curves (AROC). RESULTS: Mean RNFL thickness around the disc, and superior and inferior RNFL thickness, were significantly thinner in glaucomatous eyes than in OHT or normal eyes (P<0.001). Rim parameters were significantly smaller in glaucomatous eyes than in normal (P<0.001) and OHT eyes (P=0.01). C/D ratios were significantly greater in glaucomatous eyes than in OHT (P<0.001) and normal (P<0.001) eyes. Significant differences were found between normal and OHT eyes in 7 disc parameters. No difference was found among groups in parameters describing RNFL asymmetry between both eyes. The AROC curves of the other RNFL and disk parameters ranged from 0.741 to 0.85. CONCLUSIONS: Almost all RNFL and disc parameters showed significant differences and discriminated between glaucomatous and normal eyes. There were significant differences in some optic nerve parameters, but no RNFL parameters, between normal and OHT eyes.     

正常眼与原发性开角型青光眼的OCT视盘参数分析的对比研究

目的使用OCT评估正常眼与原发性开角型青光眼(primary open angle glaucoma,POAG)视盘(opticnerve head,ONH)的差异。方法选择具有青光眼性视神经损害或RNFL缺损、相应的视野缺损的开角型青光眼60例(60只眼),另选择正常眼60例(60只眼)作为正常对照组。对二组患者进行详细的眼科检查,并使用光学相干断层扫描仪(optical coherence tomography,OCT)测定视盘形态。OCT检查采用视盘扫描模式,评估数据包括视盘面积、视杯面积、盘沿面积、垂直盘沿面积(vertical integrated rim area,VIRA)、水平盘沿容积、平均杯盘比、水平和垂直杯盘比以及视杯容积。比较二组视盘参数,并比较平均误差(mean deviation,MD)和校正模型标准变异(correc-ted pattern standard deviation CPSD)与青光眼组的视盘参数有无相关。结果原发性开角型青和正常组之间视盘参数的比较具有显著性差异。正常眼、POAG比较分别为:视盘面积(211 /-0.5,2.62 /-0.4)mm2,(P<0.01),视杯面积(0.65 /-0.5,1.79 /-0.6)mm2,(P<0.01),盘沿面积(1.44 /-0.4,0.89 /-0.4)mm2,(P<0.01),VIRA(1.53 /-0.4,1.11 /-0.3)mm2,(P<0.01),盘沿容积(0.42 /-0.1,0.26 /-0.1)mm3,(P<0.061),杯盘比(0.31 /-0.2,0.62 /-0.2),(P<0.01)。结论OCT在开角型青光眼的早期诊断中具有重要价值。