光学相干断层扫描在糖尿病性黄斑水肿的诊断

目的阐明糖尿病性黄斑水肿的光学相干断层扫描(Optical coherence tomography,OCT)特征.方法对37例61眼糖尿病合并黄斑区水肿患者进行OCT检查及资料分析.结果 (1)黄斑区局限性水肿者OCT图像:①11眼表现为局限性视网膜层间海绵样增厚;②2眼为单纯性小范围神经上皮层浆液性脱离.(2)黄斑区及其周围弥漫性水肿者OCT图像:①12眼表现弥漫性视网膜层间海绵样膨胀增厚;②7眼可见包括中心凹的视网膜层间海绵样膨胀在内的神经上皮层脱离;③29眼表现为黄斑囊样水肿.(3)61跟中发现有22眼伴玻璃体部分后脱离,5眼伴玻璃体完全性后脱离.结论糖尿病性视网膜黄斑水肿的OCT图像为临床提供类似病理学的直观资料,尤其对治疗的随诊及判定预后具有重要参考价值.     

糖尿病性黄斑水肿的光学相干断层成像

目的：观察糠尿病性黄斑水肿(diabetic macular edema,DME)的光学相干断层成像(optical colnerence tomographly,OCT)图像特征,分析其黄斑视网膜厚度与视力的关系。方法：对50例80眼经检眼镜或荧光素眼底血管造影(fundus fluorescein angiography,FFA)检查确诊为糖尿病视网膜病变伴黄斑水肿的患者进行经黄斑中心凹水平和垂直线性扫描的OCT检查。结果：10眼表现为黄斑中心凹局限性水肿改变,21眼表现为黄斑中心凹囊样改变伴神经上皮层浆液性脱离,49眼表现为黄斑区视网膜神经上皮层弥漫性增厚。DME患者黄斑视网膜厚度与视力呈负相关关系(r=-0．60,P=0．000)。结论：DME的主要OCT图像特征为黄斑视网膜弥漫性水肿、黄斑囊样水肿伴神经上皮层脱离和黄斑局限性水肿改变;DME患者黄斑水肿越严重,视力越差。     

黄斑水肿的光相干断层扫描分析

目的 观察黄斑水肿的光相干断层扫描（OCT）图像特征；探讨黄斑中心凹厚度与最佳矫正视力之间的关系。 方法 对50例正常对照者以及47例54只经直接、间接检眼镜、三面镜及荧光素眼底血管造影（FFA）诊断为黄斑水肿的患眼进行OCT检查，通过黄斑中心凹的水平或垂直方向线性扫描，测量黄斑中心凹的厚度，对比分析两组受检者的黄斑形态及中心凹厚度值，根据形态学特点对黄斑水肿者的OCT图像进行分类并将其中心凹厚度与其最佳矫正视力进行相关分析。 结果 正常对照组与黄斑水肿组黄斑形态及中心凹厚度差异有显著性的意义。黄斑水肿患眼的OCT图像表现为3种特征，20只眼表现为黄斑区视网膜海绵样肿胀，占37.1%；26只眼表现为黄斑囊样水肿，占48.1%；8只眼表现为浆液性视网膜神经上皮脱离，占14.8%。黄斑水肿者黄斑中心凹厚度与其最佳矫正视力呈负相关（r=－0.569, P=0.000）。 结论 黄斑水肿的OCT图像主要包括视网膜海绵样肿胀、黄斑囊样水肿及神经上皮浆液性脱离。黄斑水肿患者的黄斑中心凹厚度明显增厚，黄斑中心凹厚度越厚，视力越差。 （中华眼底病杂志，2004，20：152-155）     

糖尿病性黄斑水肿的光学相干断层成像

目的:观察糠尿病性黄斑水肿(diabetic macular edema,DME)的光学相干断层成像(optical coherence tomography,OCT)图像特征,分析其黄斑视网膜厚度与视力的关系.方法:对50例80眼经检眼镜或荧光素眼底血管造影(fundus fluorescein angiography,FFA)检查确诊为糖尿病视网膜病变伴黄斑水肿的患者进行经黄斑中心凹水平和垂直线性扫描的OCT检查.结果:10眼表现为黄斑中心凹局限性水肿改变,21眼表现为黄斑中心凹囊样改变伴神经上皮层浆液性脱离,49眼表现为黄斑区视网膜神经上皮层弥漫性增厚.DME患者黄斑视网膜厚度与视力呈负相关关系(r=-0.60,P=0.000).结论:DME的主要OCT图像特征为黄斑视网膜弥漫性水肿、黄斑囊样水肿伴神经上皮层脱离和黄斑局限性水肿改变;DME患者黄斑水肿越严重,视力越差.     

特发性黄斑裂孔患者玻璃体后脱离的相干光断层成像特征

目的 观察特发性黄斑裂孔患者玻璃体后脱离的相干光断层成像（optical coherence tomography,OCT)特征,探讨裂孔的发生与玻璃体后脱离间的关系。方法 对临床确诊的特发性黄斑裂孔患者193例（223只眼）进行OCT检查,分析其玻璃体后脱离的发生及发展。结果 按Gass分期标准,I-Ⅳ期裂孔分别为21,74,97有31只眼,在Ⅰ,Ⅱ,Ⅲ期裂孔眼中,OCT图像显示玻璃体与视网膜分离者分别有15（71．4％）,38（51．4％）及46只眼（47．4％）。其表现形式有3种：（1）黄斑中心凹周围视网膜与玻璃体发生分离,但中心凹部相连,此处视网膜神经上皮层被牵起,层间出现囊腔;（2）玻璃体附着于未完全游离的视网膜裂孔盖处,使盖膜牵引上翘;（3）玻璃体完全与后极部视网膜分离,表现可见与其平行的玻璃体后介膜。这3种表现形式分别于Ⅰ,Ⅱ,Ⅲ期裂孔。在随诊的部分患眼中,OCT图像显示出I期进展至Ⅲ期裂孔的过程,并见玻璃体后脱离的裂孔自行愈合现象。在组合的OCT图像中,显示黄斑中心凹部与视乳头和颞侧视网膜之间脱离的玻璃体事 于现凹隆圆顶盖样图形。结论 OCT检测结果证实玻璃体与黄斑中心凹发生分离的过程与黄斑裂孔进展的过程相一致,提示黄斑裂孔的形成及发展与玻璃体后脱离的发生密切相关。     

光学相干断层扫描在中间葡萄膜炎性黄斑病变中的诊断应用

目的 探讨光学相干断层扫描（OCT）图像在中间葡萄膜炎黄斑病变中的诊断应用。方法 用OCT检测中间葡萄膜炎合并黄斑病变患者17例33只眼并进行资料分析。结果 11例22只眼呈现程度不同的黄斑囊样水肿（CME）特征;3只眼可见黄斑区视网膜前膜增生,同时合并神经上皮层增厚及CME病变;2只眼出现黄斑裂孔;6只眼黄斑区可见玻璃体部分后脱离,并能清晰地显示出玻璃体对视网膜的细小牵引。结论 OCT能客观、精确、有效、方便地对中间葡萄膜炎黄斑病变进行类似病理学的检查。     

外伤性黄斑病变的OCT特征研究

目的研究外伤性黄斑病变的相干光断层扫描（OCT）图像特征,以总结其患病规律。设计回顾性病例系列。研究对象477例（486眼）4-76岁的外伤性黄斑病变患者。方法回顾及分析2002年9月．2009年6月在北京同仁医院眼科门诊就诊的不同类型外伤性黄斑病变患者的门诊病历资料及OCT图像。主要指标OCT图像特征。结果外伤性黄斑病变的OCT表现主要有九种：黄斑裂孔、神经上皮层脱离、黄斑出血、黄斑水肿、黄斑前膜、脉络膜破裂、黄斑部神经上皮层萎缩薄变、色素上皮层萎缩及脉络膜萎缩。在外伤的早期,较常见的OCT表现为黄斑部色素上皮层萎缩（49．0％）、黄斑裂孔（24．7％）、神经上皮层脱离（26．3％）、黄斑出血（24．2％）、黄斑水肿（19．2％）;在外伤的中晚期,较常见的OCT表现为黄斑部色素上皮层萎缩（63．0％）、神经上皮层萎缩薄变（36．5％）。结论外伤性黄斑病变以多种OCT表现并存为多,黄斑部视网膜色素上皮层萎缩是贯穿外伤早期、中晚期最多的表现。外伤性黄斑病变早期以黄斑裂孔、视网膜脱离、黄斑出血、黄斑水肿为主,中晚期以黄斑部神经上皮层及色素上皮层萎缩为主。（眼科,2009,18：236-238）     

频域OCT与FFA在糖尿病视网膜病变患者中的应用

目的 对比频域光学相干断层扫描(optical coherence tomography,OCT)及眼底荧光血管造影(fundus fluorescein angiography,FFA)在各期糖尿病视网膜病变患者中的应用.方法 选择2型糖尿病患者80例152眼为研究对象,其中糖尿病正常视网膜(normal diabetes retina,NDR)组28例54眼、非增生性糖尿病视网膜病变(nonproliferative diabetic retinopathy,NPDR)组31例56眼、增生性糖尿病视网膜病变(proliferative diabetic retinopathy,PDR)组21例42眼.所有患眼均行频域OCT及FFA检查,频域OCT测量记录以黄斑中心凹为中心的6 mm直径区域内视网膜形态及厚度,FFA检查按常规进行,所有检查结果均由同一位有经验的眼底病医师判读,并对两种检查记录结果进行比较.结果 所有患眼行FFA检查确诊有糖尿病黄斑水肿(diabetic macular edema,DME)者8眼(58.6％),未发现DME者63眼(41.4％),其中黄斑局限性水肿31眼,弥漫性水肿28眼,弥漫性水肿伴囊样变性30眼.频域OCT检查NDR组、NPDR组、PDR组黄斑中心凹6 mm直径区域内视网膜厚度分别为(289.45±11.19)μm、(332.31±39.71) μm、(390.20±64.17) μm,与NDR组相比,NPDR组、PDR组黄斑部视网膜厚度均增加(均为P＜0.05);频域OCT确诊有DME者102眼(67.1％),未发现DME者50眼(32.9％).其中视网膜海绵样肿胀42眼,黄斑部囊样水肿14眼,浆液性神经上皮的脱离4眼,视网膜海绵样肿胀+黄斑部囊样水肿24眼,视网膜海绵样肿胀+浆液性神经上皮的脱离18眼.频域OCT及FFA检出阳性率间差异有统计学意义(P＜0.05).结论 DME在DR的各期均有分布,频域OCT和FFA在各期DR中表现不同,二者相结合能更有效地了解糖尿病患者黄斑部的结构和生理功能.     

中心凹旁玻璃体视网膜牵引与慢性黄斑水肿

目的:使用OCT研究中心凹旁玻璃体视网膜牵引与慢性弥漫性黄斑水肿或囊样黄斑水肿的关系。方法:分析2例与中心凹旁玻璃体牵引膜相关的持续性弥漫黄斑水肿或持续性弥漫黄斑水肿伴黄斑囊样水肿患者的病历及OCT表现。患有其它玻璃体视网膜病变可能影响分析的,玻璃体切除术后的,或者经玻璃体腔内注射药物治疗的患者除外。年龄相匹配的正常对照组(n=12)的OCT用作正常黄斑厚度的定量标准。结果:患者1例1眼为眼球穿通伤后,另1例患者(1眼)为特发性慢性黄斑,常规治疗无效,经检查发现与中心凹旁玻璃体视网膜牵引有关。每只眼牵引位置下的视网膜水肿与黄斑中心水肿相连,因而表现为弥漫性黄斑水肿。OCT自动中心6条辐射线程序发现1眼的牵引位置,另1眼的诊断需要借助附加的线条组程序。结论:慢性弥漫性黄斑水肿可能与中心凹旁玻璃体视网膜牵引相关。为了发现中心凹旁牵引位置,应该使用不同的OCT程序仔细查找。为了比较早期玻璃体切除或药物玻璃体溶解术与现有的治疗方法的疗效还需要进一步的研究和大样本队列研究。     

硅油填充眼的光学相干断层扫描分析

目的观察玻璃体切割术后硅油眼的光学相干断层扫描（OCT）特点。方法对37例行玻璃体切割联合硅油填充术者分别于术后2周,1、2、3个月行OCT检查,分析其图像特点及其与视力的相关性。结果黄斑中心凹厚度和最佳矫正视力（BCVA）的负对数之间为正相关（r1=0．628,P1=0．000;r2=0．583,P2=0．000;0=0．591,P3=0．000）。随访的37例中OCT显示黄斑中心凹厚度正常5眼（13．51％）;黄斑视网膜变薄1服（2．70％）;黄斑水肿31眼（83．78％）。结论OCT的穿透深度不受玻璃体腔硅油的限制,是评价玻璃体切割术后硅油眼视网膜形态功能的必不可少的辅助检查手段。     

The status of diabetic retinopathy and diabetic macular edema in patients with type 2 diabetes: a survey from Beixinjing District of Shanghai city in China

Diabetic macular edema (DME) is the major cause of vision loss in patients with diabetic retinopathy (DR). The purpose of this study was to assess the prevalence of DR and DME in a community in China and to analyze the characteristics of their optical coherence tomography (OCT) images. This study was an incidence survey based on data from 108,132 residents living in the Beixinjing District, Shanghai, China. Patients with DME came from the local health network. OCT was performed in 151 eyes of 100 type 2 diabetes patients with DR and 102 eyes of normal control subjects. Totally 795 cases were examined, and 215 of them were diagnosed to have DR. The average thickness of the macular fovea was 195.56 microm in 151 eyes from 100 random samples. Forty-six eyes had macular thickening. The statistical analysis showed that there was a positive correlation between the thickness of the macular fovea and -log of best-corrected visual acuity (r = 0.2869, p = 0.0004) as well as the severity of DR (p = 0.0003). However, there was no statistical significance between DME and posterior vitreous detachment. The images of OCT in DME included 3 types. Best-corrected visual acuity moderately correlated with retinal thickness. The macular thickness correlated with the severity of DR but not with posterior vitreous detachment.     

糖尿病性黄斑水肿眼玻璃体状况的观察

目的观察糖尿病性黄斑水肿(diabetic macular edema, DME)眼玻璃体状况，探讨玻璃体后脱离(posterior vitreous detachment, PVD)与DME之间的关系。方法回顾分析经裂隙灯显微镜、双目间接检眼镜、荧光素眼底血管造影(fundus fluorescein angiography FFA)、光相干断层扫描(optical coherence tomography， OCT)检查确诊的无明显牵引的DME 169只眼的临床资料，对比裂隙灯显微镜、双目间接检眼镜和OCT检查结果，分析患眼玻璃体状态与黄斑中心凹平均厚度的关系。结果169只眼中无玻璃体脱离者156只眼，占92.3%,中心凹平均厚度为297 μm；玻璃体脱离者11只眼，占6.5%,中心凹平均厚度为229 μm；部分玻璃体后脱离者2只眼，占1.2%，中心凹平均厚度为347 μm。结论无明显牵引的DME患眼中大多数眼未发生PVD和浅分离，玻璃体与视网膜分离时所产生的牵引力不是DME发生的主要原因。(中华眼底病杂志,2003,19:341-343)     

Patterns of macular edema in patients with uveitis: qualitative and quantitative assessment using optical coherence tomography

PURPOSE: To describe the morphologic characteristics of uveitic macular edema by the use of optical coherence tomography (OCT) and to investigate the correlation between tomographic features and visual acuity (VA). DESIGN: Cross-sectional study. PARTICIPANTS: Seventy consecutive patients with uveitis in a university-based practice with a clinical diagnosis of macular edema in at least one eye. Inclusion criteria were: (1) verification of macular edema by OCT, (2) adequate media clarity for fundus visualization, and (3) absence of coexisting ocular disease limiting visual potential. METHODS: Complete ophthalmic examination: best-corrected Snellen VA, slit-lamp examination, fundus biomicroscopy, indirect ophthalmoscopy, and OCT. Fluorescein angiography was performed in selected cases. MAIN OUTCOME MEASURES: Best-corrected Snellen VA and tomographic features of the macula, including macular thickness measurement and correlation of macular thickness with VA. RESULTS: Eighty-four eyes of 60 patients met the inclusion criteria. The mean VA (Snellen test) was 20/36. There were 3 patterns of macular edema: diffuse macular edema (DME), cystoid macular edema (CME), and serous retinal detachment (RD). Serous retinal detachment was detected in 17 eyes (20.2%). Patients were classified into the following groups: DME (46 eyes, 54.8%), CME (21 eyes, 25%), DME and RD (5 eyes, 5.9%), CME and RD (12 eyes, 14.3%). Epiretinal membrane was detected by OCT in 34 eyes (40.5%). Eight eyes (9.5%) demonstrated vitreomacular traction. The mean retinal thickness at the central fovea was 333+/-171 microm (mean +/- standard deviation). Macular edema was located mainly in the outer retinal layers. Eyes with CME had significantly greater retinal thickness measurements than eyes with DME (P<0.001). Multivariate analysis revealed that VA was negatively correlated with increased macular thickness, presence of CME, and RD (P<0.05). CONCLUSIONS: Optical coherence tomography demonstrated 3 patterns of macular edema in patients with uveitis: DME, CME, and RD. Epiretinal membrane coexisted in a significant percentage of patients. In patients with uveitis with clear media, the morphologic features of macular edema and macular thickness correlated with VA.     

Optical coherence tomography assessment of the vitreoretinal relationship in diabetic macular edema

PURPOSE: To study the vitreoretinal relationship in diabetic patients with and without diabetic macular edema (DME) using optical coherence tomography. DESIGN: Retrospective case-control study. METHODS: setting: Institutional practice. patients: Thirty-five consecutive diabetic patients (49 eyes) with DME and 35 sex- and age-matched diabetic control patients without DME (49 eyes). observation procedure: All patients had Early Treatment Diabetic Retinopathy Study visual acuity measurement and biomicroscopic examination of the vitreoretinal interface. OCT was performed to obtain cross-sectional images of the vitreoretinal interface of the macular region. Posterior vitreous detachment (PVD) was staged from 0 to 3 as follows: stage 0: absence of PVD; stage 1: perifoveolar PVD with foveolar attachment; stage 2: incomplete PVD with residual attachment to the optic nerve; and stage 3: complete PVD. Retinal thickness was measured using OCT mapping software in all cases. main outcome measures: Prevalence of the different PVD stages in both groups of eyes. RESULTS: The mean age of the patients was 60 years in both groups. Of the eyes with macular edema, 19 (38.8%) were stage 0, 26 (53.0%) stage 1, 1 (2.0%) was stage 2, and 3 (6.2%) were stage 3. In eyes without DME, the corresponding figures were, respectively, 34 (69.4%), 11 (22.4%), 1 (2.0%), and 3 (6.2%). The prevalence of perifoveolar PVD with foveolar attachment was significantly higher in the group of eyes with DME (P =.006). CONCLUSIONS: These results show the high prevalence of perifoveolar PVD with foveolar attachment in diabetic patients with macular edema. Even though PVD is not the main factor involved in the pathogenesis of DME, perifoveolar PVD may have a role in the development of this complication.     

不同OCT分型的糖尿病性黄斑水肿与血小板参数的关系

目的研究不同OCT分型的糖尿病性黄斑水肿(diabetic macular edema,DME)与血小板参数的关系。方法回顾性研究。118例(118眼)糖尿病视网膜病变(diabetic retinopathy,DR)患者中,DME组88眼,未合并DME(Non-DME)组30眼,根据DME的OCT形态分为弥漫性视网膜增厚型(diffuse retinal thickening,DRT)27眼、黄斑囊样水肿(cystoid macular edema,CME)29眼、神经上皮层脱离型(neurosensory retinal detachment,NSD)32眼,对不同组别间患者血小板计数(platelet count,PLT)、平均血小板体积(mean platelet volume,MPV)、血小板平均分布宽度(platelet distribution width,PDW)和血小板压积(plateletcrit,PCT)进行比较,并分析DR分期与DME的OCT分型间的关系。结果DRT在轻度和中度非增生型DR中的占比为50.0%,而NSD在重度非增生型DR及增生型DR患眼中的占比较高,为84.5%。DME组患者的MPV和PDW均明显高于Non-DME组(均为P<0.05),NSD患者的MPV和PDW均明显高于DRT和CME患者(均为P<0.05)。结论不同DME分型的患者MPV、PDW有差异,血小板与NSD的发生、发展可能相关。     

外伤性黄斑裂孔的光学相干断层成像特征

目的 :分析外伤性黄斑裂孔的光学相干断层成像特征。方法 :18例黄斑裂孔患者 (18眼 )行OCT检查。结果 :17例外伤性黄斑裂孔均未见玻璃体后脱离 (PVD) ,裂孔边界整齐 ,无明显视网膜脱离。 7例裂孔边缘可见神经上皮脱离的轮化 ,10例未见晕轮。结论 :年轻的外伤性黄斑裂孔患者不易发生视网膜脱离 ,定期检查OCT有助于外伤性黄斑裂孔治疗方式的选择。     

Role of OCT in the diagnosis and follow up of diabetic macular edema

The aim is to present, along with a brief literature review, the results of OCT scan in eyes with diabetic macular edema (DME), as well as examples of the utility of OCT for different therapeutic approaches. One-hundred and thirty-six eyes with diabetic retinopathy were analyzed with OCT to explore the different patterns of DME. Some eyes with DME were studied with OCT pre and postoperatively to determine the efficacy of photocoagulation and vitrectomy to restore a normal macular profile. Sixty-eight eyes with a central foveal thickness of 200 mu or more were considered "edematous". Three different patterns of DME were recognized and analyzed: macular thickening, cystoid macular edema and shallow retinal detachment. The change in macular profile and internal retinal structure after laser or surgical treatment are well visible with OCT. OCT contributes in understanding the anatomy of DME and the intraretinal damage and seems to be the technique of choice for the follow-up of macular edema. We think that this tool should always be used in monitoring the effect of therapies in future studies.     

Role of OCT in the diagnosis and follow up of diabetic macular edema

The aim is to present, along with a brief literature review, the results of OCT scan in eyes with diabetic macular edema (DME), as well as examples of the utility of OCT for different therapeutic approaches. One-hundred and thirty-six eyes with diabetic retinopathy were analyzed with OCT to explore the different patterns of DME. Some eyes with DME were studied with OCT pre and postoperatively to determine the efficacy of photocoagulation and vitrectomy to restore a normal macular profile. Sixty-eight eyes with a central foveal thickness of 200µ or more were considered “edematous”. Three different patterns of DME were recognized and analyzed: macular thickening, cystoid macular edema and shallow retinal detachment. The change in macular profile and internal retinal structure after laser or surgical treatment are well visible with OCT. OCT contributes in understanding the anatomy of DME and the intraretinal damage and seems to be the technique of choice for the follow-up of macular edema. We think that this tool should always be used in monitoring the effect of therapies in future studies.     

Optical coherence tomographic patterns of diabetic macular edema

PURPOSE: To describe various morphologic patterns of diabetic macular edema (DME) demonstrated by optical coherence tomography (OCT) and correlate them with visual acuity. DESIGN: Retrospective, observational, case series. METHODS: A retrospective review of all patients with DME who underwent OCT evaluation and met the study inclusion criteria between May 1998 and December 2002 at the Cole Eye Institute was performed. The OCT scans were evaluated for the presence of diffuse retinal thickening (DRT), cystoid macular edema (CME), posterior hyaloidal traction (PHT), serous retinal detachment (SRD), and traction retinal detachment (TRD). Additionally, the retinal thickness was measured and visual acuity evaluated. RESULTS: Two hundred seventy-six OCT scans of 164 eyes of 119 patients were identified. OCT revealed five morphologic patterns of DME: DRT (269, 97%), CME (152, 55%), SRD without PHT (19, 7.0%), PHT without TRD (35, 12.7%), and PHT with TRD (8, 2.9%). Mean retinal thickness varied depending on the morphologic pattern. The mean visual acuities (Snellen equivalent) also varied between groups. Increasing retinal thickness in all patterns was significantly correlated with worse visual acuity (P < .005). The OCT patterns containing CME (P = .01) and PHT without TRD (P = .02) were also significantly associated with worse vision. CONCLUSIONS: DME exhibits at least five different morphologic patterns on OCT. There is a significant correlation between retinal thickness and visual acuity.