capsulorhexis

Capsulorexis
  • 文章类型: Journal Article
    我们描述了一种替代的自动化技术,该技术包括通过使用连接在超声乳化装置的抽吸管上的胰岛素针对囊袋同时进行前囊穿刺和减压,以防止在膨胀期白内障撕囊期间发生“阿根廷旗标”。
    阿西斯研究所和霍夫塔尔米专业中心,位于圣保罗州,巴西。
    前瞻性介入研究。
    本研究纳入88例白色或膨胀型白内障患者的88只眼。常规透明角膜切口,用锥虫蓝染色,前房内麻醉,和眼科粘弹性装置在手术前使用。使用双公鲁尔连接器将26号针连接到超声乳化抽吸导管上进行冲洗,并通过一个新的穿刺术切口插入前房,切口斜面朝下。插入后立即,对液化皮质进行自动抽吸,以去除前豆状核材料并实现囊减压。用针尖压缩细胞核,以除去捕获在细胞核后表面和后囊之间的任何液化物质。使用相同的超声乳化和参数进行所有手术。观察并记录完全连续撕囊的速率。
    在任何情况下均未观察到并发症。一个单一的阶段,连续,并且在100%的情况下实现了中心良好的撕囊术。
    我们得出的结论是,使用连接在超声乳化机抽吸管道上的胰岛素针同时穿刺和减压囊袋有效地避免了膨胀期白内障手术中的“阿根廷国旗标志”。
    UNASSIGNED: We describe an alternative automated technique that consists of simultaneous anterior capsule puncture and decompression of the capsular bag by using an insulin needle attached to the aspiration tubing of the phacoemulsification device to prevent the occurrence of the \"Argentinian Flag sign\" during capsulorhexis in intumescent cataract.
    UNASSIGNED: Instituto de Olhos de Assis and Center of Specialties Hoftalmed, located in the state of São Paulo, Brazil.
    UNASSIGNED: Prospective interventional study.
    UNASSIGNED: Eighty-eight eyes of 88 patients with white or intumescent cataracts were included in this study. Routine clear cornea incision, capsule staining with trypan blue, intracameral anesthesia, and ophthalmic viscoelastic device were used before the procedure. A 26-gauge needle was connected to the phacoemulsification aspiration tubing using a double male Luer connector for irrigation, and aspiration was inserted into the anterior chamber through a new paracentesis incision with the bevel facing down. Immediately after insertion, automated aspiration of the liquefied cortex was performed to remove anterior intralenticular material and achieve capsular decompression. Compression of the nucleus with the needle tip was performed to remove any liquefied material trapped between the posterior surface of the nucleus and the posterior capsule. All surgeries were performed using the same phacoemulsification and parameters. The rate of complete continuous capsulorhexis was observed and noted.
    UNASSIGNED: No complications were observed in any of the cases. A single-stage, continuous, and well-centered capsulorhexis was achieved in 100% of cases.
    UNASSIGNED: We conclude that a simultaneous puncture and decompression of the capsular bag using an insulin needle attached to the aspiration tubing of the phacoemulsification machine effectively avoided the \"Argentinian Flag sign\" in intumescent cataract surgery.
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  • 文章类型: Journal Article
    目的:研究眼用粘弹性装置(OVD)和不同手术入路对环形撕囊(CCC)制作前后眼内压(IOP)的影响,以此作为前房稳定性的衡量标准。
    方法:对去核猪眼睛进行前瞻性实验WetLab研究。眼压在CCC前后用iCare回弹眼压计测量(iCareic200;iCare芬兰Oy,万塔,芬兰)。使用的OVD是粘性的[Z-Hyalin,CarlZeissMeditecAG,德国;透明质酸(HA)]和分散的[Z-Celcoat,CarlZeissMeditecAG,德国;羟丙基甲基纤维素病(HPMC)]。CCC是使用尿钳或23g微镊子与OVD的不同组合创建的。
    结果:使用尿钳,CCC期间眼压从63.65±6.44降至11.25±3.63mmHg。使用不同的OVD没有区别。使用23g微镊子,眼压从65.35±8.15降至36.55±6.09mmHg。无论使用何种OVD,使用尿钳或23g微钳的眼压下降之间的差异都非常显着。
    结论:与摘除猪眼睛的主要切口相比,使用侧孔进行撕囊手术可降低眼压。分歧OVD的运用对IOP下降没有显著影响。
    OBJECTIVE: To investigate the influence of ophthalmic viscoelastic devices (OVDs) and different surgical approaches on the intraocular pressure (IOP) before and after creation of the curvilinear circular capsulorhexis (CCC) as a measure for anterior chamber stability during this maneuver.
    METHODS: Prospective experimental WetLab study carried out on enucleated porcine eyes. IOP was measured before and after CCC with the iCare Rebound tonometer (iCare ic200; iCare Finland Oy, Vantaa, Finland). The OVDs used were a cohesive one [Z-Hyalin, Carl Zeiss Meditec AG, Germany; hyaluronic acid (HA)] and a dispersive [Z-Celcoat, Carl Zeiss Meditec AG, Germany; hydroxy propylmethylcellulosis (HPMC)]. The CCC was created using Utrata forceps or 23 g microforceps in different combinations with the OVDs.
    RESULTS: Using the Utrata forceps the IOP dropped from 63.65±6.44 to 11.25±3.63 mm Hg during the CCC. The use of different OVDs made no difference. Using the 23 g microforceps the IOP dropped from 65.35±8.15 to 36.55±6.09 mm Hg. The difference between IOP drop using either Utrata forceps or 23 g microforceps was highly significant regardless of the OVD used.
    CONCLUSIONS: Using the sideport for the creation of the capsulorhexis leads to a lesser drop in IOP during this maneuver compared to the main incision in enucleated porcine eyes. The use of different OVD has no significant influence on IOP drop.
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  • 文章类型: Journal Article
    目的:比较3种囊切开术定心方法。
    方法:私人诊所,兹林,捷克共和国。
    方法:前瞻性,连续病例系列。
    方法:接受白内障手术的180只眼在选择性激光囊切开术前用微过滤的0.4%台盼蓝溶液进行前囊染色。前60只眼(第1组)进行了散瞳扩大的瞳孔集中的囊切开术。接下来的60只眼睛(第2组)集中在台盼蓝中央标志(TCL)上。最后60例(第3组)以患者固定的同轴浦肯野反射(CPR)为中心。关键解剖标志和TCL之间的测量,CPR囊切开术,制作人工晶状体(IOL)植入中心。
    结果:TCL,在研究中观察到>94%的眼睛,与CPR重合,位移<0.1±0.1mm。第1组的囊切开术在IOL上明显缩小了0.3±0.2mm。第2组对称IOL关系保持为0.15±0.1mm的偏心。第3组具有与0.15±0.1mm的IOL相似的偏心。使用IOLMaster700数据和CALLISTOEyeSystem进行的验证表明,CPR和TCL与测得的视轴重合。
    结论:清晰可见的TCL作为患者固定CPR的替代标志,在前囊上对倾斜不敏感。不需要进一步的患者依从性。两者都优于散瞳中心,实现对称IOL覆盖。这适用于囊袋切开术和撕囊术。
    OBJECTIVE: To compare 3 capsulotomy centration methods.
    METHODS: Private clinic, Zlin, Czech Republic.
    METHODS: Prospective, consecutive case series.
    METHODS: 180 eyes undergoing cataract surgery had anterior capsule staining with microfiltered 0.4% trypan blue solution before selective laser capsulotomy. The first 60 eyes (Group 1) had mydriatic dilated pupil centered capsulotomies. The next 60 eyes (Group 2) were centered on the trypan blue central landmark (TCL). The final 60 capsulotomies (Group 3) were centered on the patient fixated coaxial Purkinje reflex (CPR). Measurements between key anatomical landmarks and the TCL, CPR capsulotomies, and implanted intraocular lens (IOL) center were made.
    RESULTS: The TCL, observed in >94% of eyes in the study, coincided with the CPR with a displacement of <0.1 ± 0.1 mm. Group 1 capsulotomies were noticeably decentered on the IOLs by 0.3 ± 0.2 mm. The Group 2 symmetrical IOL relationship was maintained with a decentration of 0.15 ± 0.1 mm. Group 3 had a similar decentration with the IOLs with 0.15 ± 0.1 mm. Verification with IOLMaster 700 data and CALLISTO Eye System showed that the CPR and the TCL were coincident with the measured visual axis.
    CONCLUSIONS: The clearly visible TCL served as an alternate landmark to the patient fixated CPR, and being on the anterior capsule was not sensitive to tilt. Further patient compliance was not required. Both were superior to dilated pupil centration, to achieve symmetric IOL coverage. This has application for both capsulotomies and capsulorhexes.
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  • 文章类型: Review
    阿根廷国旗标志(AFS)是白内障摘除过程中令人恐惧的并发症。透镜内压力,尤其是过度的后压力,已被确定为与AFS相关的囊应力和撕裂的潜在机制。囊袋张力是由正的晶状体内压力产生的,一旦开始手动撕囊术,这将导致虹膜透镜光阑向前移动。这种张力可能会导致无意中的眼泪自传播到镜头赤道,造成了AFS,在其他术中并发症中。因此,这篇综述强调了识别膨胀型白内障的重要性,以及减轻预防AFS所需的囊内压力的技术组合.然而,一些前囊撕裂的情况是不可避免的。因此,还将重点放在白内障摘除术期间用于治疗前囊膜撕裂的技术上,减轻对后囊的延伸。
    The Argentinian flag sign (AFS) is a feared complication during cataract extraction. Intralenticular pressures, especially excessive posterior pressure, have been identified as potential mechanisms for capsular stress and tearing associated with AFS. Capsular tension is created by positive intralenticular pressures, which cause the irido-lens diaphragm to move anteriorly once the manual capsulorhexis has been initiated. This tension can cause inadvertent tears that self-propagate to the lens equator, causing an AFS, among other intraoperative complications. Thus, this review highlights the importance of identifying intumescent cataracts as well as a combination of techniques to relieve intracapsular pressures needed to prevent AFS. However, some instances of anterior capsular tears are unavoidable. Therefore, focus will also be placed on techniques during cataract extraction used to manage anterior capsular tears, mitigating extension to the posterior capsule.
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  • 文章类型: Journal Article
    我们描述了一种使用精确脉冲囊切开术(PPC)进行二次囊切开术的新技术,以治疗前囊收缩综合征(ACCS)。包括白内障手术和人工晶状体(IOL)植入后的晚期并发症的病症。微脉冲二次囊切开术为患有严重前囊收缩综合征的患者提供了一种可控且安全的方法,可以考虑作为一种替代手术技术。
    We describe a novel technique that uses precision pulse capsulotomy (PPC) to perform a secondary capsulotomy for the management of anterior capsule contraction syndrome (ACCS), a condition that comprises a late complication after cataract surgery and intraocular lens (IOL) implantation. Micropulse secondary capsulotomy offers a controlled and safe approach for patients with severe anterior capsule contraction syndrome and may be considered as an alternative surgical technique.
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  • 文章类型: Comparative Study
    目的:观察前囊抛光对眼轴长度正常的年龄相关性白内障患者术后囊混浊和囊弯曲的影响。
    方法:大学医院。
    方法:前瞻性自我对照试验。
    方法:纳入年龄相关性白内障患者,年龄56至84岁,眼轴长度正常。手术前,采用抛硬币法随机选择一只眼进行术中360°前囊抛光(抛光组);对侧眼不接受治疗(对照组).囊袋弯曲指数(CBI),前囊混浊(ACO),后囊混浊(PCO),1周时记录前囊开口面积(ACOA),1个月,3个月,6个月,术后12个月使用扫频源光学相干断层扫描和裂隙灯检查。
    结果:纳入21例患者(42只眼)。组内比较显示两组术后1周至1个月CBI有显著差异,术后6个月至12个月(P<0.05)。组间比较显示CBI在术后1周有显著差异(P<0.05);术后12个月,ACOA差异有统计学意义(P<0.05)。在任何时间点,ACO或PCO的组间差异均无统计学意义(P>0.05)。
    结论:对于患有年龄相关性白内障且眼轴长度正常的患者,360°前囊抛光可以延迟早期囊袋变形,而不会增加ACO和PCO的风险。这种方法还可以限制前囊开口的收缩。
    OBJECTIVE: To investigate the effect of anterior capsule polishing on postoperative capsule opacification and capsular bend in patients with age-related cataract displaying normal axial length.
    METHODS: Eye Hospital of Wenzhou Medical University at Hangzhou.
    METHODS: Prospective self-controlled trial.
    METHODS: Patients with age-related cataracts aged 56 to 84 years displaying normal axial length were enrolled. Before surgery, a coin-toss method was used to randomly select 1 eye for intraoperative 360 degrees anterior capsule polishing (polishing group); the contralateral eye received no treatment (control group). Capsular bend index (CBI), anterior capsule opacification (ACO), posterior capsule opacification (PCO), and anterior capsule opening area (ACOA) were recorded at 1 week, 1 month, 3 months, 6 months, and 12 months postoperatively using swept-source optical coherence tomography and slitlamp examination.
    RESULTS: 21 patients (42 eyes) were enrolled. Within-group comparisons showed that both groups had significant differences in CBI between 1 week and 1 month postoperatively, and between 6 months and 12 months postoperatively ( P < .05). Between-group comparisons revealed a significant difference in CBI at 1 week postoperatively ( P < .05); at 12 months postoperatively, there was a significant difference in ACOA ( P < .05). There were no significant between-group differences regarding ACO or PCO at any timepoint ( P > .05).
    CONCLUSIONS: For patients with age-related cataracts and normal axial length, 360 degrees anterior capsule polishing can delay early capsular bag deformation without increasing the risks of ACO and PCO. This approach can also limit contraction of the anterior capsule opening.
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  • 文章类型: Case Reports
    前囊收缩综合征是一种罕见但众所周知的并发症,与白内障手术期间进行的连续曲线撕囊相关。除非收缩进展到涉及视轴或引起晚期人工晶状体相关并发症,否则它仍然无症状。一名50多岁的男性患者在顺利的白内障手术2年后,右眼视力严重下降。裂隙灯生物显微镜检查显示包膜包茎和致密,中央,纤维斑块完全闭塞的前撕囊开口。尝试了掺钕钇铝石榴石激光前囊切开术和玻璃体切除术,但证明无效。手术切除与手动切割纤维膜,成功清除视轴并恢复视力。
    Anterior capsular contraction syndrome is an uncommon but well-known complication associated with continuous curvilinear capsulorhexis performed during cataract surgery. It remains asymptomatic unless the constriction progresses to involve the visual axis or causes late intraocular lens-related complications. A male patient in his 50s presented with severely decreased vision in his right eye 2 years after uneventful cataract surgery. Slit-lamp biomicroscopy revealed capsular phimosis and a dense, central, fibrous plaque with total occlusion of the anterior capsulorhexis opening. Neodymium-doped yttrium aluminium garnet laser anterior capsulotomy and vitrectorhexis were attempted, but proved ineffective. Surgical excision with manual cutting of the fibrotic membrane was performed, successfully clearing the visual axis and restoring vision.
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  • 文章类型: Journal Article
    目的:所描述的用于去除眼内异物(IOFB)的人工晶状体(IOL)阻断技术是为了防止异物由于从角膜切口中去除时遇到的阻力而缩回到后段中而出现的。然而,在所描述的技术中,除了外科手术的难度,新的关注点是根据异物的大小创建后撕囊,并使异物通过撕囊。
    方法:这里我们描述了一种IOL阻断技术的新方法。在这种方法中,IOFB,用眼内钳固定,后囊没有任何开口,保持在垂直于长轴的位置,直接提升到前房,并从整体可折叠IOL的正面安全移除。
    结果:在采用这种方法治疗的所有患者中,成功取出IOFBs,无术中或术后并发症,所有患者均实现术后IOL集中。
    结论:这种方法可能为IOL阻断技术提供实用性。
    OBJECTIVE: The intraocular lens blocking technique described for the removal of intraocular foreign bodies emerged as a result of an effort to prevent the foreign body from being retracted into the posterior segment because of the resistance encountered while removing it from the corneal incision. However, in the technique described, in addition to the difficulty of the surgical procedure, the new concern is to create a posterior capsulorhexis according to the size of the foreign body and to pass the foreign body through the capsulorhexis.
    METHODS: Here, the authors describe a new approach to the intraocular lens blocking technique. In this approach, the intraocular foreign body, which is held with intraocular forceps without any opening in the posterior capsule, is held in a perpendicular position to the long axis, lifted directly into the anterior chamber, and safely removed from the front of the monoblock foldable intraocular lens.
    RESULTS: In all patients treated with this approach, IOFBs were successfully removed without intraoperative or postoperative complications, and postoperative intraocular lens centralization was achieved in all patients.
    CONCLUSIONS: This approach may provide practicality to the intraocular lens blocking technique.
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  • 文章类型: Journal Article
    目的:比较晶状体前囊上皮和基底膜侧染色与台盼蓝(TB)仅晶状体前囊基底膜侧染色的组织形态学变化。
    方法:对2021年4月至2022年9月接受白内障手术患者的72个样本进行了横断面研究。在TB染色的胶囊撕囊后,在外部将其制成两半,一半标记为对照(样品A)。另一半立即在上皮侧进一步用TB染色,并作为病例(样品B)。分析样品的晶状体上皮细胞和基底膜变化。
    结果:晶状体上皮细胞完整性的丧失,晶状体上皮细胞部分或完全脱离,晶状体上皮细胞变性,和基底水肿明显高于对照组,而基底膜的完整性在两组之间没有任何统计学意义。与对照相比,在病例中存在细胞密度的统计学显著降低。
    结论:用TB染色囊袋上皮侧对晶状体上皮细胞更有害,为进一步研究眼内晶状体植入前囊袋染色以减少后囊混浊的发生率铺平了道路。
    OBJECTIVE: To compare the histomorphologic changes on the anterior lens capsule by both epithelial and basement membrane side staining to those of only basement membrane side staining of the anterior lens capsule with Trypan Blue (TB).
    METHODS: A cross-sectional study was done on 72 samples from patients who underwent cataract surgery between April 2021 and September 2022. After capsulorhexis of the TB-stained capsule, it was made into two halves externally and one half labeled as controls (sample A). The other half was immediately stained further with TB on the epithelial side and was taken as cases (sample B). Samples were analyzed for lens epithelial cells and basement membrane changes.
    RESULTS: The loss of intactness of lens epithelial cells, partial or complete detachment of lens epithelial cells, degeneration of lens epithelial cells, and basement edema were significantly higher in cases compared to controls, whereas intactness of the basement membrane did not show any statistical significance between the two groups. There was a statistically significant decrease in cell density in cases compared to controls.
    CONCLUSIONS: Staining the epithelial side of the capsular bag with TB is more detrimental to lens epithelial cells and paves the way for a further study of staining the capsular bag before intra-ocular lens implantation to reduce the incidence of posterior capsule opacification.
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  • 文章类型: Journal Article
    我们描述了一种用于白色和过成熟白内障的新型“流式撕囊”技术,并将其与标准的“针减压撕囊”技术进行了比较。对420例膨胀型或非膨胀型成熟白色白内障患者的68只眼进行了超声乳化术或人工小切口白内障手术,并进行了“流式撕囊”(第1组)或“针减压撕囊”(第2组)。第1组的平均连续曲线撕囊(CCC)完成时间为6.6±3.4秒,第2组为10.4±4.2秒(P<0.001)。在第1组和第2组中,眼粘外科器械(OVD)补充的平均次数分别为0.4±0.2和1.8±0.8(P<0.001)。CCC成功率1组为95.8%,2组为87.2%(P=0.001)。观察到新技术在手术时间方面具有更好的效果,OVD补充次数,成功率高于标准针减压技术。
    We described a novel \"flow capsulorhexis\" technique in white and hypermature cataracts and compared it with the standard \"needle decompression capsulorhexis\" technique. Six hundred and eight eyes of 420 patients with intumescent or non-intumescent mature white cataracts who had undergone phacoemulsification or manual small incision cataract surgery with \"flow capsulorhexis\" (Group 1) or \"needle decompression capsulorhexis\" (Group 2) were assessed. The mean continuous curvilinear capsulorhexis (CCC) completion time was 6.6 ± 3.4 seconds in Group 1 and 10.4 ± 4.2 seconds in Group 2 (P < 0.001). The mean number of times for an ophthalmic viscosurgical device (OVD) supplement was 0.4 ± 0.2 and 1.8 ± 0.8 in Group 1 and Group 2, respectively (P < 0.001). CCC success rate was 95.8% in Group 1 and 87.2% in Group 2 (P = 0.001). The new technique was observed to have better outcomes in terms of surgical time, OVD supplement times, and success rate than the standard needle decompression technique.
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