vitreomacular traction

玻璃体黄斑牵引
  • 文章类型: Case Reports
    我们介绍了一例玻璃体黄斑牵引(VMT)患者,他在第六次玻璃体内注射阿柏西普治疗年龄相关性黄斑变性后出现了全厚度黄斑裂孔(FTMH),并回顾了有关该不良事件的危险因素和发病机制的文献。
    FTMH可在玻璃体黄斑粘连或VMT恶化的情况下重复多次玻璃体内注射后发生。该患者的FTMH及时手术治疗成功,并安全恢复额外的注射.
    玻璃体内注射后视力意外下降的患者,应该用光学相干断层扫描重新评估,以排除包括玻璃体黄斑界面异常在内的替代病理。FTMH,如果存在,应及时治疗,以便根据需要恢复治疗和视觉优化。
    UNASSIGNED: We present a case of a patient with preceding vitreomacular traction (VMT) who developed a full-thickness macular hole (FTMH) following his sixth intravitreal aflibercept injection for the treatment of age-related macular degeneration and review the literature on risk factors and pathogenesis of this adverse event.
    UNASSIGNED: FTMH can occur after an extended number of repeat intravitreal injections in the setting of worsening vitreomacular adhesion or VMT. This patient\'s FTMH was successfully treated surgically in a timely manner, and additional injections were resumed safely.
    UNASSIGNED: Patients with an unexpected decrease in vision after intravitreal injections should be reevaluated with optical coherence tomography to rule out alternative pathology including vitreomacular interface abnormalities. FTMH, if present, should be treated promptly to allow for resumption of therapy as needed and visual optimization.
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  • 文章类型: Journal Article
    BACKGROUND: A lamellar macular hole (LMH) is characterized by a distinct morphologic configuration and can be distinguished from related entities such as macular pseudohole (MPH) and epiretinal membrane with foveoschisis (ERM-FS) by clear morphologic features.
    OBJECTIVE: Based on current knowledge, the pathophysiologic function of LMH in the spectrum of vitreomacular interface diseases will be described and therapeutic concepts will be presented.
    METHODS: Current studies are supplemented by case reports to provide a schematic overview of the natural history and therapeutic concepts at the vitreomacular interface.
    RESULTS: The LMH is as a retrospective marker for pathologic posterior vitreous detachment in adult patients and may be interpreted as the pathophysiologic center of tractional maculopathies. Various vitreomacular pathologies can result in LMH: a detached vitreomacular traction, a spontaneously closed penetrating macular hole, or an epiretinal membrane with foveoschisis. Pathophysiologically, a degenerative, progressive loss of the architecture of the foveal muller cell cone may be the underlaying mechanism, resulting in the typical undermining of the hole edges and occasionally in a full thickness macular hole. The optimal timing and the appropriate surgical method are the focus of current clinical studies.
    CONCLUSIONS: The pathophysiology of LMH indicates a smooth transition of tractive maculopathies. These should be prospectively evaluated in order to develop evidence-based treatment strategies for LMH.
    UNASSIGNED: HINTERGRUND: Das Makulaschichtforamen (LMH) zeichnet sich durch eine differenzierte, morphologische Konfiguration aus und lässt sich anhand eindeutiger morphologischer Merkmale von nahestehenden Entitäten wie dem makulären Pseudoforamen (MPH) und der epiretinalen Membran mit Foveoschisis (ERM-FS) abgrenzen. ZIEL: Anhand des aktuellen Wissenstands soll die pathophysiologische Funktion des LMH im Spektrum vitreoretinaler Grenzflächenerkrankungen beschrieben und therapeutische Konzepte sollen vorgestellt werden.
    METHODS: Die verfügbare Studienlage wird durch Fallberichte erweitert, um zu einer schematischen Übersicht der Spontanverläufe und Therapiekonzepte am vitreomakulären Übergang zu gelangen.
    UNASSIGNED: Das Makulaschichtforamen kann beim erwachsenen Patienten als retrospektiver Marker für eine stattgehabte pathologische hintere Glaskörperabhebung interpretiert werden und steht im pathophysiologischen Zentrum der traktiven Makulopathien. Verschiedene vitreomakuläre Pathologien können in einem LMH resultieren: eine gelöste vitreomakuläre Traktion, ein spontan verschlossenes durchgreifendes Makulaforamen oder eine epiretinale Membran mit Foveoschisis. Pathophysiologisch ist von einem degenerativen, progressiven Verlust der Architektur des fovealen Müller-Zell-Konus auszugehen, der in der typischen Unterminierung der Lochränder und vereinzelt im Verlauf auch in einem durchgreifenden Makulaforamen münden kann. Der optimale Zeitpunkt sowie die adäquate Operationsmethode stehen im Fokus aktueller klinischer Studien.
    UNASSIGNED: Die Pathophysiologie des LMHs deutet auf einen fließenden Übergang der traktiven Makulopathien hin, die standardisiert und prospektiv ausgewertet werden sollten, um evidenzbasierte Therapiestrategien beim LMH entwickeln zu können.
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  • 文章类型: Case Reports
    背景:激光皮肤表面修复术是一种流行的非侵入性皮肤恢复美容程序。由于健康保险计划通常不涵盖这些类型的程序,病人经常自掏腰包。因此,有出国的动机,价格更实惠。然而,目的地国家的从业者可能缺乏严格的激光安全培训,监管监督,或许可,特别是在用于“美容”程序的设备上。在某些情况下,这会导致悲剧性的结果,尤其是当不合格的从业者操作医疗级激光设备时。
    方法:一名29岁的妇女因手持调Q掺钕钇铝石榴石(Nd:YAG)激光脉冲装置在越南一家医疗水疗中心进行皮肤表面修复治疗而遭受视网膜烧伤。患者没有充分了解其视力的潜在风险,也没有提供任何眼睛保护。短暂的,由于黄斑烧伤,患者右眼意外激光照射导致不可逆的视力丧失。这一事件立即引起了痛苦,接着突然出现了漂浮物,还有视网膜和玻璃体出血.尽管使用非标签贝伐单抗治疗脉络膜新生血管膜的发展,由于黄斑瘢痕的存在,视力保持在计数手指的水平。
    结论:使用基于激光的设备时,采取安全措施至关重要,例如佩戴安全护目镜或使用眼罩来保护眼部组织免受潜在损害。美容激光设备的日益普及带来了巨大的公共卫生风险,因为许多操作员缺乏基本安全标准的足够培训,或者他们忽视了跟随他们。此外,在国外寻求服务的患者必须遵守目的地国家的监管规定,这可能并不总是执行必要的安全标准。需要进一步的研究来确定区域和全球激光相关损伤的发生率,以帮助指导教育和监管工作。
    BACKGROUND: Laser skin resurfacing is a popular cosmetic procedure for noninvasive skin rejuvenation. Since health insurance plans often do not cover these types of procedures, patients often pay out of pocket. Consequently, there is an incentive to go abroad, where prices are more affordable. However, practitioners in destination countries may lack rigorous training on laser safety, regulatory oversight, or licensing, especially on devices used for \"cosmetic\" procedures. In certain cases, this can lead to tragic outcomes, especially when underqualified practitioners operate medical-grade laser devices.
    METHODS: A 29-year-old woman suffered a retinal burn from a handheld Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) laser pulse device used to perform skin resurfacing treatment at a medical spa in Vietnam. The patient was not adequately informed about the potential risk to her vision and was not provided with any eye protection. A momentary, unintended laser exposure to the patient\'s right eye led to irreversible vision loss due to a macular burn. This incident caused immediate pain, followed by the sudden appearance of floaters, along with a retinal and vitreous hemorrhage. Despite treatment with off-label bevacizumab for the development of a choroidal neovascular membrane, vision remained at the level of counting fingers because of the presence of the macular scar.
    CONCLUSIONS: When utilizing laser-based devices, it is crucial to employ safety measures, such as the wearing of safety goggles or the use of eye shields to protect ocular tissues from potential damage. The growing availability of cosmetic laser devices presents a substantial public health risk, because numerous operators lack adequate training in essential safety standards, or they neglect to follow them. Furthermore, patients seeking services abroad are subject to the regulatory practices of the destination country, which may not always enforce the requisite safety standards. Further research is needed to determine regional and global incidence of laser-related injuries to help direct educational and regulatory efforts.
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  • 文章类型: Journal Article
    目的:玻璃体牵引(VMT)在糖尿病性视网膜病变(DR)的眼中具有独特的表现。本研究旨在探讨DR中VMT的特点和临床过程。
    方法:回顾性病例系列。
    方法:对30例DR并发VMT患者的30只眼进行回顾性研究。报告了基线和最终最佳矫正视力(BCVA)和光学相干断层扫描(OCT)特征。线性回归模型用于分析视觉结果的相关因素。
    结果:在30只眼睛中,在所有情况下都注意到后透明膜增厚,并且在14只眼中从不同方向进行了多层牵引(46.7%)。21只眼睛(70%)有牵引性黄斑视网膜劈裂,7人(23.3%)有中央凹脱离,5人(16.7%)有层状黄斑裂孔,三个(10%)有一个全厚度黄斑孔,包括两个黄斑裂孔视网膜脱离.三只眼睛在观察的3个月内自发释放VMT。对于其余27只眼睛的接收操作,VMT,全厚度黄斑裂孔,浆液性中央凹脱离均在术后缓解,仅6眼(22.2%)黄斑裂片残留。无基线OCT特征与术后BCVA相关(P>.05)。
    结论:DR中的VMT具有增厚的后透明样,其中许多患者有多层牵引和/或并发黄斑视网膜裂孔。板层黄斑裂孔,全厚度黄斑裂孔,或并发视网膜脱离也可能发生。很少发生VMT的自发消退,接受VMT手术的患者视力和黄斑结构改善,黄斑裂孔和视网膜脱离消退。
    OBJECTIVE: Vitreomacular traction (VMT) has unique presentations in eyes with diabetic retinopathy (DR). This study aimed to investigate the characteristics and clinical course of VMT in DR.
    METHODS: A retrospective case series.
    METHODS: Thirty eyes from 30 patients with DR and concurrent VMT were retrospectively enrolled. Baseline and final best-corrected visual acuity (BCVA) and optical coherence tomography (OCT) characteristics were reported. Linear regression models were used to analyze the correlating factors for visual outcome.
    RESULTS: Of the 30 eyes, a thickened posterior hyaloid membrane was noted in all cases and multi-layered traction from different directions in 14 eyes (46.7%). Twenty-one eyes (70%) had tractional macular retinoschisis, seven (23.3%) had foveal detachment, five (16.7%) had a lamellar macular hole, and three (10%) had a full-thickness macular hole, including two with macular hole retinal detachment. Three eyes had spontaneous release of the VMT within 3 months of observation. For the remaining 27 eyes receiving operations, the VMT, full-thickness macular hole, and serous foveal detachment all resolved postoperatively with residual macular schisis in 6 eyes (22.2%) only. None of the baseline OCT characteristics were associated with postoperative BCVA (P > .05).
    CONCLUSIONS: VMT in DR had a thickened posterior hyaloid, and many of them had multi-layered traction and/or concurrent macular retinoschisis. Lamellar macular hole, full-thickness macular hole, or concurrent retinal detachment may also occur. Spontaneous resolution of VMT rarely occurred, and those who underwent operation for VMT had improved vision and macular structures with resolution of the macular hole and retinal detachment.
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  • 文章类型: English Abstract
    BACKGROUND: Intravitreal anti-vascular endothelial growth factor (VEGF) is the standard treatment for exudative age-related macular degeneration (AMD). The constitution of the vitreomacular interface varies greatly in cases of attached (with or without traction) or detached vitreous body, which can impact the effectiveness of the anti-VEGF treatment.
    OBJECTIVE: Based on the current literature this article displays the current state of the science on whether the constitution of the vitreous body has an effect on the anti-VEGF treatment.
    METHODS: The published data extracted from current trials and post hoc analyses concerning this topic are presented and put into the clinical context.
    RESULTS: The presence of a vitreomacular adhesion reduces the efficacy of anti-VEGF treatment of exudative AMD. Posterior vitreous body detachment represents a positive prognostic factor concerning the efficacy of anti-VEGF treatment but not necessarily the prognosis for visual acuity.
    CONCLUSIONS: Patients with attached vitreous body need a more intensive treatment monitoring compared to patients with detached vitreous body. Therefore, in eyes with initial posterior vitreous body detachment receiving a treat and extend regimen, the interval between anti-VEGF injections can be extended to 4 instead of 2 weeks without endangering the success of treatment.
    UNASSIGNED: HINTERGRUND: Die Anti-VEGF(„vascular endothelial growth factor“)-Therapie ist die Standardtherapie zur Behandlung der exsudativen altersabhängigen Makuladegeneration (AMD). Bei anliegendem (mit oder ohne Traktion) oder abgehobenem Glaskörper besteht eine stark unterschiedliche Beschaffenheit des vitreomakulären Interface. Dies kann Auswirkungen auf die Effektivität der Anti-VEGF-Therapie haben.
    UNASSIGNED: Es erfolgt die Darstellung des aktuellen Stands der Wissenschaft, ob und inwiefern die Beschaffenheit des Glaskörpers einen Einfluss auf die Anti-VEGF-Therapie hat.
    METHODS: Die zu diesem Thema publizierten Daten aus klinischen Studien werden aufgeführt und in den klinischen Kontext gesetzt.
    UNASSIGNED: Das Vorliegen einer vitreomakulären Adhäsion reduziert die Effektivität der Anti-VEGF-Therapie. Bezogen auf die Effektivität, aber nicht unbedingt auf die Visusprognose stellt die hintere Glaskörperabhebung einen prognostisch günstigen Faktor dar.
    CONCLUSIONS: Patienten mit anliegendem Glaskörper benötigen ggf. eine intensivere Therapieüberwachung als Patienten mit einem abgehobenen Glaskörper. Deshalb kann bei Anwendung eines Treat-and-Extend-Schemas eine Intervallverlängerung bei Patienten mit initial abgehobenen Glaskörper ggf. schneller vorgenommen werden (4 anstatt 2 Wochen), ohne den Erfolg der Anti-VEGF-Therapie zu gefährden.
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  • 文章类型: Journal Article
    玻璃体是解剖学和生物化学上的复杂结构。由于它与视网膜的距离和牢固的粘附,研究人员研究了这两种结构之间的联系,以及它们各自的病理是如何联系起来的。一些实验和临床研究已经证明玻璃体在视网膜疾病的发病机理中的重要作用。这篇叙述性综述强调了玻璃体在视网膜疾病中的作用以及自引入光学相干断层扫描以来所取得的进步。这导致对玻璃体视网膜疾病的更好理解,并证明其在其他视网膜病变中的决定性作用。如糖尿病视网膜病变或年龄相关性黄斑变性。当我们加深对玻璃体结构的了解时,函数,和异常情况,我们可以更好地联系疾病的变化,并确定有效的治疗方法。
    The vitreous body is an anatomically and biochemically complex structure. Because of its proximity and firm adherence to the retina, researchers have examined the link between these two structures and how their individual pathologies might be connected. Several experimental and clinical studies have already demonstrated the important role of vitreous in the pathogenesis of retinal disorders. This narrative review highlights the role of the vitreous in retinal diseases and the improvements that have been made since the introduction of optical coherence tomography. This leads to a better understanding of vitreoretinal diseases and demonstrates its determinant role in other retinal pathologies, such as diabetic retinopathy or age-related macular degeneration. As we deepen our knowledge of the vitreous\'s structure, function, and abnormal conditions, we can better link the changes in diseases and identify effective treatments.
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  • 文章类型: Journal Article
    背景:这项研究的目的是检查单侧玻璃体黄斑牵引(VMT)的脉络膜血管指数(CVI)是否与健康的眼睛不同;以及不同的治疗方法是否会影响CVI。
    方法:56例接受自发消退的单侧VMT患者(n=30)的基线和治疗后8周的CVI,使用配对样本t检验将玻璃体视网膜手术(n=16)或充气玻璃体溶解术(n=10)与其他眼进行比较。校正年龄和性别的偏相关分析用于治疗组之间的计算。P值<0.05被认为具有统计学意义。
    结果:VMT和对照眼的平均基线CVI无统计学差异(p=0.81,r=-0.38)。牵引松解术后随访时VMT眼与对侧眼的CVI差异无统计学意义(p=0.12,r=0.49)。在自发解决组中,玻璃体视网膜手术组和充气玻璃体溶解组VMT眼的基线和随访CVIs有统计学相似(分别为p=0.72、p=0.32和p=0.79)。自发性脱离患者的CVIs增加了0.57±5.81%,玻璃体视网膜手术组减少1.098±4.76%,充气玻璃体溶解患者CVI降低0.307±4.24%。然而,组间比较,这些变化均无统计学意义(p=0.21,r=0.02)。
    结论:先前的研究认为玻璃体黄斑牵引可能对玻璃体视网膜界面疾病中的脉络膜变化有一定作用。这项研究表明,单独的VMT不会在牵引释放前或后引起脉络膜血管指数的任何显着变化。
    BACKGROUND: The aim of this study was to examine if choroidal vascularity index (CVI) is different in eyes with unilateral vitreomacular traction (VMT) from their healthy fellow eyes; and whether different treatments affect the CVI.
    METHODS: The baseline and 8-week post treatment CVIs of 56 unilateral VMT patients that underwent spontaneous resolution (n = 30), vitreoretinal surgery (n = 16) or pneumatic vitreolysis (n = 10) were compared with fellow eyes using paired samples t-test. Partial correlation analyses correcting age and gender was used for calculations between treatment groups. P values < 0.05 were considered statistically significant.
    RESULTS: The mean baseline CVI for VMT and control eyes had no statistically significant difference (p = 0.81, r= -0.38). The post traction release follow-up CVI of VMT eyes and contralateral eyes had no significant difference (p = 0.12, r = 0.49). In spontaneous resolution group, vitreoretinal surgery group and pneumatic vitreolysis group the baseline and follow up CVIs of VMT eyes were statistically similar (p = 0.72, p = 0.32 and p = 0.79 respectively).Spontaneous detachment patients\' CVIs showed a 0.57±5.81% increase, vitreoretinal surgery group had a reduction of 1.098±4.76%, and the pneumatic vitreolysis patients showed a CVI reduction of 0.307±4.24%. However, none of these changes was found to be statistically significant when compared between the groups (p = 0.21, r = 0.02).
    CONCLUSIONS: Previous studies have argued that vitreomacular traction might have a role on the choroidal changes seen in the vitreoretinal interface disorders. This study has shown that VMT alone does not cause any significant changes in choroidal vascular index pre or post traction release.
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  • 文章类型: Journal Article
    背景:测量玻璃体黄斑牵引(VMT)患者眼睛的视网膜动脉轨迹(RAT)和视网膜静脉轨迹(RVT)的弯曲程度,并将其与健康的眼睛进行比较。
    方法:这是一个回顾性研究,横截面,29例单侧VMT患者58只眼的病例对照研究。参与者分为两组。第1组VMT定义为仅有形态学变化,而第2组VMT定义为伴有囊肿或孔的形态学变化,以量化疾病的严重程度。使用ImageJ程序从彩色眼底照片评估RAT和RVT。眼底照片旋转90度。在彩色眼底照片上标记视网膜动脉和静脉的路线,并拟合到二次多项式曲线(ax[x]/100bxc)。系数\'\'a\'\'是轨迹的宽度和陡度。研究了玻璃体黄斑牵引和健康眼睛的RAT和RVT之间的比较,并使用ImageJ程序确定了RAT和RVT与疾病严重程度之间的关联。
    结果:11名受试者为男性,18名受试者为女性。平均±SD年龄为70.6±7.6岁。18只眼睛的右侧有VMT,11只眼睛的左眼有VMT。第1组11只眼,第2组18只眼。两组之间的轴向长度(AL)相似(22.63±1.20mmvs22.45±1.45mmp=0.83)。(表1)VMT眼的平均RAT为0.60±0.18,健康眼的平均RAT为0.51±0.17(p=0.063)。全组VMT眼的平均RVT为0.74±0.24,健康眼的平均RVT为0.62±0.25(p=0.02)。在第1组中,具有VMT的眼睛的平均RVT在统计学上显着高于健康眼睛(p=0.014)。根据各组和整个组,在使用VMT的眼睛和健康眼睛之间评估的其他参数没有任何统计学上的显着差异。(表2-3-4)结论:与其他玻璃体视网膜界面疾病如视网膜前膜和黄斑裂孔不同,VMT的特征可能是较窄的RVT,,其特征是一个更大的“a”值。
    BACKGROUND: To measure the degree of curvature of the retinal artery trajectory (RAT) and retinal vein trajectory (RVT) in the eyes of patients with vitreomacular traction (VMT) and compare them with their healthy fellow eyes.
    METHODS: This was a retrospective, cross-sectional, case-control study of 58 eyes of 29 patients with unilateral VMT. The participants were divided into two groups. Group 1 VMT was defined as having only morphological changes, while group 2 VMT was defined as morphological changes accompanied by the presence of a cyst or hole to quantify the severity of the disease. The RATs and RVTs were assessed from the color fundus photographs using the ImageJ program. The fundus photographs were rotated 90°. The course of the retinal arteries and veins were marked on a color fundus photograph and fitted to a second-degree polynomial curve (axe[x]/100+bx+c). The coefficient \'\'a\'\' was the width and steepness of the trajectories. The comparison between the RAT and RVT of VMT and healthy fellow eyes was investigated and the association between the RAT and RVT and the severity of disease were determined using the Image J program.
    RESULTS: Eleven subjects were male, and 18 subjects were female. The mean ± SD age was 70.6 ± 7.6 years. Eighteen of the eyes had VMT in the right and 11 of the eyes had VMT in the left eye. Eleven eyes were in group 1 and 18 eyes were in group 2. Axial length (AL) was similar between the two groups (22.63 ± 1.20 mm vs 22.45 ± 1.45 mm p = 0.83) (Table 1). The mean RAT was 0.60 ± 0.18 in eyes with VMT and 0.51 ± 0.17in healthy eyes (p = 0.063). The mean RVT was 0.74 ± 0.24 in eyes with VMT and 0.62 ± 0.25 in healthy eyes for the whole group (p = 0.02). In group 1, the mean RVT of the eyes with VMT was statistically significantly higher than the healthy eyes (p = 0.014). There was not any statistically significant difference for the other parameters evaluated between eyes with VMT and healthy eyes according to the groups and the whole group. (Tables 2-4) CONCLUSION: Unlike other vitreoretinal interface diseases such as epiretinal membrane and macular hole, VMT may be characterized by a narrower RVT, which is characterized by a larger \"a\" value.
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  • 文章类型: Journal Article
    扫描源光学相干断层扫描血管造影(SS-OCTA)分析玻璃体黄斑牵引(VMT)手术前后的脉管系统以及15个月的“观察等待”随访数据。
    38只眼的回顾性分析。患者分为第1组:未经治疗(20只眼);第2组:未经治疗,自发释放牵引(4只眼);第3组:玻璃体切除术(14只眼)。
    在所有情况下,脉络膜毛细血管的SS-OCTA显示了一个低反射区,牵引力释放后消失了。在第1组中,所分析的因素均无明显变化。在第2组中,视力(VA)从0.3logMAR提高到0.1logMAR。以下参数均无明显变化:中央脉络膜厚度,浅凹无血管区(sFAZ),深中央凹无血管区(dFAZ),和血管密度。在1只眼中形成层状黄斑孔。增加牵引自发释放机会的因素是牵引宽度和中央视网膜厚度(P<0.05)。在第3组中,VA从0.27Snellen(0.6logMAR)提高到0.44Snellen(0.4logMAR)(P<0.05)。术后OCTA显示中央视网膜厚度显著降低(P<.001),参数sFAZ,和dFAZ(P<0.05)。
    玻璃体切除术后sFAZ和dFAZ下降,但自发释放牵引后没有下降。自发释放牵引的眼睛中的VA更好。玻璃体切除术组的VA改善程度更大。在所有情况下,在SS-OCTA的脉络膜毛细血管层中都可以看到反射不足的区域。当牵引力被释放时它消失。早期治疗,至少在低VA患者中,可能是有益的。
    UNASSIGNED: A swept-source optical coherence tomography angiography (SS-OCTA) analysis of vasculature in vitreomacular traction (VMT) before and after surgery as well as 15 months\' \"watchful waiting\" follow-up data.
    UNASSIGNED: A retrospective analysis of 38 eyes. Patients were divided into group 1: untreated (20 eyes); group 2: untreated, spontaneous release of traction (4 eyes); and group 3: vitrectomy (14 eyes).
    UNASSIGNED: In all cases, SS-OCTA of the choriocapillaris revealed a hyporeflective area, which disappeared after traction release. In group 1, none of the analyzed factors significantly changed. In group 2, visual acuity (VA) improved from 0.3 logMAR to 0.1 logMAR. None of the following parameters significantly changed: central choroidal thickness, superficial fovea avascular zone (sFAZ), deep fovea avascular zone (dFAZ), and vessel densities. In 1 eye a lamellar macular hole formed. Factors increasing the chances of spontaneous release of traction were width of traction and central retinal thickness (P < .05). In group 3, VA improved from 0.27 Snellen (0.6 logMAR) to 0.44 Snellen (0.4 logMAR) (P < .05). Postoperative OCTA revealed significant decreases in central retinal thickness (P < .001), the parameters sFAZ, and dFAZ (P < .05).
    UNASSIGNED: sFAZ and dFAZ decreased after vitrectomy but not after spontaneous release of traction. VA was better in eyes with spontaneous release of traction. The degree of improvement in VA was greater in the vitrectomy group. In all cases a hyporeflective area is visible in the choriocapillaris layer in SS-OCTA. It disappears when traction is released. Early treatment, at least in patients with lower VA, might be beneficial.
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  • 文章类型: Journal Article
    中央星窝,位于黄斑的中心,是挤满了视锥光感受器和负责中心视力。孤立的中央凹光感受器破坏可能发生在各种遗传性,退化,创伤性,和毒性脉络膜视网膜疾病。这些以前已经通过多个同义词知道,包括黄斑微孔,中央凹斑点,和外部中央凹的微缺陷。这些疾病的共同临床特征是在中央凹或近凹区域存在明显正常的中央凹或轻微的色素减退病变。详细的病史以及高分辨率光学相干断层扫描通常有助于在大多数情况下得出结论性诊断。局灶性光感受器破坏通常涉及椭球/叉指带的丢失或稀疏,孤立或与中央凹的外界膜或视网膜色素上皮破坏有关。玻璃体黄斑界面(VMI)疾病,包括玻璃体黄斑牵引,玻璃体后脱离,视网膜前膜,和即将发生的黄斑裂孔可能仍然是最常见的原因。视网膜营养不良,如视锥细胞营养不良,隐匿性黄斑营养不良,在较年轻的年龄组中,色盲可能表现为视力下降和眼底正常。其他原因包括光视网膜病变(例如,从凝视太阳或激光指针曝光的历史中),钝性外伤,药物暴露(例如,poppers黄斑病变或他莫昔芬视网膜病变),和急性视网膜色素上皮病变(ARPE)。视觉预后取决于潜在的病因,在VMI患者亚组中常见的完全恢复,ARPE,而持续性的外部视网膜缺损在其他条件下是规则。我们讨论了导致孤立的中央凹感光体缺陷的鉴别诊断。识别和理解导致中央凹光感受器破坏的潜在疾病过程可能有助于预测视觉预后。
    Fovea centralis, located at the center of the macula, is packed with cone photoreceptors and is responsible for central visual acuity. Isolated foveal photoreceptor disruption may occur in a variety of hereditary, degenerative, traumatic, and toxic chorioretinal diseases. These have been known previously by multiple synonyms including macular microhole, foveal spot, and outer foveal microdefects. A common clinical feature underlying these conditions is the presence of apparently normal fovea or subtle hypopigmented lesion at the foveal or juxtafoveal area. A detailed history along with high-resolution optical coherence tomography is often helpful to derive a conclusive diagnosis in majority of these cases. Focal photoreceptor disruption usually involves loss or rarefaction of ellipsoid/interdigitation zone, either in isolation or associated with external limiting membrane or retinal pigment epithelium disruption in the fovea. Vitreomacular interface (VMI) disorders including vitreomacular traction, posterior vitreous detachment, epiretinal membrane, and impending macular hole possibly remain the most common cause. Retinal dystrophies such as cone dystrophy, occult macular dystrophy, and achromatopsia may present with diminution of vision and normal appearing fundus in a younger age group. Other causes include photic retinopathy (e.g., from a history of sun gazing or laser pointer exposure), blunt trauma, drug exposure (e.g., poppers maculopathy or tamoxifen retinopathy), and acute retinal pigment epitheliopathy (ARPE). Visual prognosis depends on the underlying etiology with complete recovery common in the subset of patients with VMI, and ARPE, whereas persistent outer retinal defects are the rule in other conditions. We discuss the differential diagnoses that lead to isolated foveal photoreceptor defects. Identifying and understanding the underlying disease processes that cause foveal photoreceptor disruption may help predict visual prognosis.
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