环扎加压术治疗大裂孔视网膜脱离

目的：探讨环扎加压术对大裂孔视网膜脱离的疗效。方法：回顾分析1998年12月至2001年12月进行环扎加压术的大裂孔视网膜脱离病例33例33眼。结果：环扎加压术1次手术成功率78．79％，未愈7例中3例再行环扎加压术治愈，总治愈率达87．88％。结论：环扎加压术对于单纯型大裂孔视网膜脱离实为一种有效的治疗方法。眼内气体填充是治疗有翻转后瓣的大裂孔网脱的有效手段。     

Intravitreal injection of 0.3 ml of SF6 gas for persistent subfoveal fluid after scleral buckling for rhegmatogenous retinal detachment

Purpose  To determine the efficacy of intravitreal injection of sulphur hexafluoride (SF6) gas for reducing persistent subfoveal fluid after scleral buckling surgery for macula-off rhegmatogenous retinal detachments. Methods  We injected 0.3 ml of SF6 gas into the vitreous cavity of two eyes of two patients with persistent macular retinal detachment 3 and 5 months after successful scleral buckling. Optical coherence tomography was performed before and after surgery. Results  Subfoveal fluid was displaced peripheral to the fovea immediately after gas injection and the fluid was absorbed gradually in both eyes. Conclusions  Persistent subfoveal fluid after scleral buckling may be treated with intravitreal SF6 gas injection. The authors have no proprietary interest in any aspect of this report     

巩膜环扎加压术后眼轴与屈光状态的改变

目的：探讨视网膜脱离巩膜环扎加压术后眼部屈光状态的改变。方法：用眼科A超、检影验光等对86例原发性视网膜脱离患者的86只患眼手术前1d及术后1、4、12w时的眼轴长度、眼屈光度等进行测量并将结果进行比较。结果：眼轴长度在术后1、4、12w时均较术前增长(P＜0．01)。眼屈光度在术后1、4、12w时均较术前增加，且向负值偏移(术后1、4w，P＜0．015术后12w，P＜0．05)。结论：巩膜环扎加压术后眼轴长度和屈光状态的变化与眼内嵴有关，术后眼轴增长是眼屈光度负值增加的主要因素。     

Colonoscope flexural rigidity measurement

A testing device is developed that determines the stiffness, or flexural rigidity, of an endoscope at specific locations down its length by subjecting it to a compressive axial force, a situation similar to the actual forces applied to the endoscope during a clinical procedure. The endoscope is made to deform in a similar fashion to a slender buckled column and the force causing this deformation is related to the flexural rigidity using column buckling theory. A direct relationship between the critical load needed to cause buckling and the square of column length L is demonstrated experimentally and is expected theoretically, giving confidence in the application of column buckling theory to endoscope testing. Additional confidence in the validity of the columnbuckling test results is obtained by their similarity to data obtained by subjecting the endoscope to a transverse load, determining deflection, and modelling the endoscope as a bent elastic beam. Several makes and models of endoscopes were tested, with flexural rigidity values typically ranging between 160 to 240 Ncm². The effect of a metal stiffener inserted in an endoscope's accessory channel is quantified, as is the change in flexural rigidity down the insertion shaft of a graded-stiffness endoscope. Significant differences in flexural rigidity were obtained between identical endoscopes, each sharing similar usage histories, indicating the need for flexural rigidity measurements for each individual endoscope of a particular model line, though a more extensive study is required to reliably determine scope-to-scope stiffness variations for a particular model line.     

巩膜外冷凝联合巩膜扣带术治疗视网膜脱离

目的 研究巩膜外冷凝联合巩膜扣带术治疗视网膜脱离的疗效。方法 在视网膜裂孔对应的巩膜外冷凝、放出视网膜下液、巩外加压。结果 随诊1mo以上,35眼中,32眼达到解剖复位,成功率为91．43％。结论 巩膜外冷凝联合巩膜扣带术治疗视网膜脱离,手术操作简单,手术反应轻,疗效满意,是一理想的手术方法。     

视网膜脱离巩膜环扎术后眼前节结构的初步观察

目的 观察巩膜环扎术后眼前节结构的变化,探讨术后继发性闭角型青光眼的发病机制。方法 应用超声生物显微镜检查３０例（３３只眼）孔源视网膜脱离患者术前、后３－７天的活体奶前节形态结构,并分别进行定量测定,检查结果经统计学分析两组间配对ｔｓｗｃｗ,以Ｐ〈０．０５作为差异有显著性标准。结果 术前１只眼存在裂隙样睫状体脱离。术后１１只眼（３３．３％）发生睫状体脱离,睫状体增厚水肿;术前睫状体厚度为（８２１．     

非凝固手术联合氪多波长激光治疗单纯孔源性视网膜脱离

目的：探讨将巩膜扣带术中冷凝改为术后氪多波长激光光凝封闭裂孔治疗视网膜脱离的疗效、适应证范围及临床意义。方法：回顾性分析2001／2003在我院行非凝固巩膜扣带手术联合术后氪多波长激光封闭裂孔治疗孔源性视网膜脱离36例(36眼)，观察其疗效并对结果进行评价。结果：术后随访3-24mo，视网膜完全复位的32例，术后0．5a后矫正视力≥0．132例，最佳矫正视力为1．5。结论：非凝固巩膜扣带术联合氪多波长激光治疗单纯孔源性视网膜脱离，简化了手术操作，无凝固手术相关的并发症，术后采用氪多波长激光封闭裂孔，可以根据裂孔的部位及届光介质混浊的程度选用不同波长的激光进行封孔，是治疗单纯孔源性视网膜脱离的有效方法之一。     

达那康对视网膜脱离术后视功能恢复的干预效果

目的　探讨银杏叶提取物 (达那康 )对视网膜脱离术后视网膜功能改变的干预效果。方法　采用前瞻随机对照研究的方法将 5 0例 ( 5 0眼 )视网膜脱离患者分为达那康用药组和对照组。应用视网膜电流图和光学相干断层扫描观察术后第 1、2、4和第 8周视网膜功能和形态的改变。结果　视网膜脱离术前对照组和用药组的年龄、性别和视网膜脱离病程均具有可比性。与术后第 1周的ERGb波相比较 ,用药组第 2周ERGb即有显著的改变 ,而对照组在第 8周ERGb波才有显著的改变。OCT检查黄斑部视网膜厚度的改变用药组在术后第 4周才有显著的改变 ,而对照组在术后第8周才有显著的改变。结论　达那康可能在一定程度上促进视网膜脱离术后视功能的恢复。     

巩膜扣带手术后视物变形的原因分析

目的 探讨巩膜扣带手术后视网膜复位患者视物变形的原因。 方法 对巩膜扣带手术后视网膜成功复位的79例79只眼行临床观察，手术后2周、2、6个月及1年时行Amsler表检查，分为视物变形组和无视物变形组；同时行检眼镜、荧光素眼底血管造影（FFA）和光相干断层扫描（OCT）检查。并对手术后2周视物变形10只眼和正常人10只眼行视盘-中心凹角测量。 结果 79只眼手术后2周51只眼（64.56%）视物变形，视物变形眼和正常眼的视盘-中心凹角无明显差异(P=0.880)。79只眼中44只眼(视物变形组35只眼，无视物变形组9只眼) 手术后2周时检查OCT和FFA ，视物变形组OCT发现黄斑结构异常31只眼(88.57%)，有7种类型，主要为神经上皮层脱离（74.29%）；FFA发现黄斑结构异常6只眼(17.14%)，也主要为神经上皮层脱离(66.67%)。无视物变形组OCT发现神经上皮层脱离和色素上皮层脱离各1只眼，FFA未见异常。手术后2、6个月、1年时随访，各有18只眼（18/28）、5只眼(5/9)和3只眼(3/7)异常黄斑结构好转，视物变形减轻或消失；而黄斑前膜形成后未见明显变化，视物变形严重而持续。 结论 巩膜扣带手术后视物变形的主要原因是黄斑结构异常，手术后早期和晚期视物变形的主要原因分别是神经上皮层脱离和黄斑前膜。（中华眼底病杂志，2004，20：94-97）     

玻璃体切除术联合巩膜外环扎治疗脉络膜脱离型视网膜脱离

目的：探讨玻璃体切除联术合巩膜外环扎治疗脉络膜脱离型视网膜脱离的临床疗效。

方法：回顾性分析2014-01/2018-02在我院行玻璃体切除术联合巩膜外环扎治疗的脉络膜脱离型视网膜脱离患者19例19眼,术后3～12mo行玻璃体腔硅油取出术。观察患者术后视网膜复位率、眼压、视力恢复及并发症情况。

结果：本组患者术后视网膜均复位,术后3mo患眼玻璃体腔硅油填充状态下眼压(16.09±3.58mmHg)、硅油取出术后6mo眼压(14.69±3.10mmHg)均高于术前(6.78±1.90mmHg)(均P<0.05)。硅油取出术后6mo,15眼患者视力较术前提高。术后无低眼压及眼球萎缩等并发症发生。

结论：玻璃体切除术联合巩膜外环扎治疗脉络膜脱离型视网膜脱离是相对安全有效的,视网膜复位率高,术后并发症少,再次手术率低。