学科分类
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48 个结果
  • 简介:AIM:Toestablishanuntransfectedhumancornealstromal(HCS)celllineandcharacterizeitsbiocompatibilitytoacellularporcinecornealstroma(aPCS).·METHODS:PrimaryculturewasinitiatedwithapurepopulationofHCScellsinDMEM/F12media(pH7.2)containing20%fetalbovineserumandvariousnecessarygrowthfactors.Theestablishedcelllinewascharacterizedbygrowthproperty,chromosomeanalysis,tumorigenicityassay,expressionofmarkerproteinsandfunctionalproteins.Furthermore,thebiocompatibilityofHCScellswithaPCSwasexaminedthroughhistologicalandimmunocytochemistryanalysesandwithlight,electronmicroscopies.·RESULTS:HCScellsproliferatedtoconfluence2weekslaterinprimarycultureandhavebeensubculturedtopassage140sofar.AcontinuousuntransfectedHCScelllinewithapopulationdoublingtimeof41.44hoursatpassage80hasbeendetermined.Resultsofchromosomeanalysis,morphology,combinedwiththeresultsofexpressionofmarkerproteinandfunctionalproteinssuggestedthatthecellsretainedHCScellproperties.Furthermore,HCScellshavenotumorigenicity,andwithexcellentbiocompatibilitytoaPCS.·CONCLUSION:Anuntransfectedandnon-tumorigenicHCScelllinehasbeenestablished,andthecellsmaintainedpositiveexpressionofmarkerproteinsandfunctionalproteins.Thecellline,withexcellentbiocompatibilitytoaPCS,mightbeusedforinvitroreconstructionoftissue-engineeredHCS.

  • 标签: human CORNEAL STROMAL cells cell line
  • 简介:AIM:Todemonstratethemorphologyandstructureofinvitroreconstructedtissue-engineeredhumancornealepithelium(TE-HCEP)withseedercellsfromanuntransfectedHCEPcellline.·METHODS:TheTE-HCEPswerereconstructedinvitrowithseedercellsfromanuntransfectedHCEPcellline,andscaffoldcarriersofdenudedamnioticmembrane(dAM)inair-liquidinterfaceculturefor3,5,7and9days,respectively.Thespecimenswereexaminedwithhematoxylin-eosin(HE)stainingofparaffin-section,immunocytochemicalstaining,scanningandtransmissionelectronmicroscopy.·RESULTS:DuringinvitroreconstructionofTE-HCEP,HCEPcellsformeda3-4,6-7and8-10layersofanHCEP-likestructureondAMsinair-liquidinterfaceculturefor3,5and7days,respectively.Butthecellsdeceasedto5-6layersandthestructureofstraifiedepitheliumbecamelooseatday9.Andthecellsmaintainedpositiveexpressionofmarkerproteins(keratin3andkeratin12),cell-junctionproteins(zonulaoccludens-1,E-cadherin,connexin43andintegrinβ1)andmembranetransportproteinofNa+-K+ATPase.TheHCEPcellsinTE-HCEPwererichinmicrovillionapicalsurfaceandestablishednumerouscell-cellandcell-dAMjunctionsatday5.·CONCLUSION:ThemorphologyandstructureofthereconstructedTE-HCEPweresimilartothoseofHCEPinvivo.TheHCEPcellsinthereconstructedTE-HCEPmaintainedthepropertiesofHCEPcells,includingabilitiesofformingintercellularandcell-extracellularmatrixjunctionsandabilitiesofperformingmembranetransportation.TheuntransfectedHCEPcellsanddAMscouldpromisinglybeusedinreconstructionHCEPequivalentforclinicalcornealepitheliumtransplantation.

  • 标签: tissue-engineered HUMAN CORNEAL epithelium in VITRO
  • 简介:目的评价带线羟基磷灰石义眼座(HA)无包裹植入的临床疗效.方法对29例眼球摘除术后患者,采用带线羟基磷灰石义眼座作为眼窝植入物,无包裹直接植入.Ⅰ期植入21例.Ⅱ期植入8例.结果分别随访5-18月,4眼术后出现球结膜裂开,2眼术后轻度上睑下垂,1眼术后五月义眼座中度暴露,均经相应治疗后恢复.其他病例手术效果良好,无植入物脱出及移位,义眼座活动度良好.结论带线羟基磷灰石义眼座直接植入术,具有操作简单、材料易得、并发症少等优点,具有良好的应用前景.

  • 标签: 羟基磷灰石(HA) 直接植入 整形
  • 简介:作为临床医生,面对患者视力无法提高时,常常会有挫败感。然而有很多方法可以帮助这样的低视力者。图片1显示的是人们由于远视力低下而可能面临的困难,以及帮助人们克服困难的设施。这些包括光学设备,非光学设备,环境改造的建议,以及康复和特殊的学习措施。在这篇文章中,我们会展示如何评估低视力者,并找出他们最迫切的需求。我们将概述可能的干预措施并给出指导方针。

  • 标签: 低视力 评估 干预
  • 简介:1.视网膜厚度报告扫描方式:快速黄斑扫描、黄斑线状扫描。应用:评估黄斑区域疾病和些特殊区域。视网膜厚度为玻璃体视网膜界面与色素上皮/脉络膜毛细血管层前表面的距离,在扫描图像中两条白线之间即为计算机自动测量的视网膜厚度。视网膜厚度坐标图为相应扫描视网膜厚度线条图。

  • 标签: OCT 视网膜厚度 玻璃体视网膜界面 脉络膜毛细血管 扫描方式 打印
  • 简介:质量是个难以描述及定义的概念。人们对质量的评定各有不同的见解。拿出租车旅行来打个比方。你如何评定旅行的质量?你的评定时基于司机是否有礼貌还是车子的豪华程度?或者以你安全到达目的地为标准?如果让你的司机来评价同样场旅行的质量,他们可能认为旅途中没有抛锚或没有被交通事故耽搁就是好。评定质量有很多不同的标准,以那点为准取决于你的角色。

  • 标签: 手术质量 白内障 交通事故 旅行 出租车 司机
  • 简介:AIM:Tocomparetheregularityandaccuracyoflaserinsitukeratomileusis(LASIK)flapscreatedbytheZiemerFEMTOLDV'Classic'(Ziemer'Classic')andZiemerFEMTOLDVCrystalLinefemtosecondlaser(ZiemerCrystalLine).METHODS:Fourier-domainopticalcoherencetomography(RTVueOCT)wasusedtomeasurethemorphologyof200LASIKflapsof100consecutivepatientscreatedwiththeZiemerClassic(100flaps)ortheZiemerCrystalLine(100flaps)atoneweekpostoperatively.Flapthicknesswasevaluatedat36specifiedmeasurementpointsoneachflap.Forallprocedureswithbothlasers,thenominalflapthicknesswas110μm.RESULTS:ThemeanflapthicknessoftheZiemerCrystalLinegroup(102.49±2.68μm)wasthinnerthanthatoftheZiemerClassicgroup(107.65±5.09μm)(P<0.01).Averagethicknessofallflapswasuniformwithin4μmatallmeasurementpoints.TheflapsintheZiemerCrystalLinegroupweremoreregularthanthoseintheZiemerClassicgroupwhenmeasuredfromthecentertotheperiphery.Themaximumdeviationfromthenominal110μmof36measurementswas8μmintheZiemerClassicgroup,whileintheZiemerCrystalLinegroupitwas9μm.Withinthe3600measurementsonthe100eyes,differencesgreaterthan20μmwereobserved0.14%intheZiemerClassicgroup,and0.04%intheZiemerCrystalLinegroup.CONCLUSION:TheflapscreatedwiththeZiemerFEMTOLDVCrystalLinefemtosecondlaseraremoreuniformandthinnerthanthosecreatedbytheZiemerFEMTOLDVClassicfemtosecondlaser.

  • 标签: LASER in situ KERATOMILEUSIS flap thickness
  • 简介:视野使用红色视标的视野检查可以发现显著的视野异常.简单的测试如正切暗点计屏也很有效.精确评估视野缺损需要视野计:人工(Goldmann)或者自动(Humphery)视野计可以给出详细的视野参数.但是结果受操作者的主观操作影响.

  • 标签: 青光眼患者 评估 成年人 视野缺损 视野异常 视野检查
  • 简介:<正>患者,男性,7岁。因发现双眼视力差就诊。自幼聋哑,家族小否认有类似病例。体检:黄发,眉毛内侧较密,双眉相连,颊部斑状色素沉着,高腭弓,四肢皮肤散在色素脱失斑。眼部阳性发现:内眦外移,内眦间距为38mm,睑裂小,虹膜呈淡蓝色。眼底见视网膜血管和脉络膜血管显于白色巩膜之前,黄斑中心凹反光不清;扩瞳后检影:右眼

  • 标签: 综合征 视网膜血管 色素沉着 脉络膜血管 双眼视力 色素脱失
  • 简介:<正>眼型重症肌无力是种少见的眼病,而累及诸眼外肌引致眼球固定者则未见报道。我们发现例,现报告如下。患者,女性,24岁,未婚。因双眼球固定、上睑下垂于1997年4月3日来诊。患者于21年前(约3岁时),在无明显诱因下出现眼球各向运动困难,双上

  • 标签: 重症肌无力 上睑下垂 眼型 眼外肌 眼球活动 新斯的明
  • 简介:<正>患者女性,47岁,怀孕时起全身皮肤大小不的结节隆起,以面部躯干部较为集中,而四肢稀少。诊断为神经纤维瘤病。患者自幼视力不佳,目前以左眼出现视力模糊症状月就诊,无其它眼部不适症状。

  • 标签: 神经纤维瘤病 躯干部 模糊症状 视力 小结节 患者
  • 简介:  患者男,44岁.有眼视力进行性下降半年,无眼痛,来我院就诊.眼部检查:右眼视力0.1,球结膜无充血,角膜透明,颞下方虹膜膨隆,从4:00~10:00虹膜表面见大量散在黑色素沉着,相应巩膜面未见明显粗大血管,扩瞳后见品状体透明,向鼻上方移位,颞下可见晶状体缘及悬韧带,从5:00~9:00可见个高度隆起球形黑色肿块(图1),间接眼底镜下可见肿块后视网膜轻度隆起,并伴局部个球形隆起,后极部视网膜正常.……

  • 标签: 睫状体黑色素瘤 黑色素瘤例
  • 简介:患者男,22岁。2008年10月20日患者主诉:右眼被铁钉击中40分钟。眼科检查:右眼视力0.1,混合性充血(++),6:00位见23mm长的纵形角膜缘穿孔伤口,前房积血,瞳孔变形,角膜伤口见虹膜嵌顿,未见异物,内眼结构均窥不清,指测眼压T1;左眼矫正视力1.O,检查未见异常。急诊X线眼眶正侧位片示:右眼眶内未见明显异物。急诊收入院,诊断:右眼角膜穿孔伤,并急诊在局麻下行右眼角膜修补术。

  • 标签: 眼内异物 眼镜片 眼角膜穿孔伤 右眼视力 眼科检查 角膜伤口
  • 简介:<正>先天性第鳃沟发育异常形成的瘘管在临床上很少见,误诊率很高。笔者收治二例,现报道如下:例1,患者男,21岁,因右耳后反复红肿、流脓8年于1996年5月9日入院。患者8年前无诱因出现右耳后红肿、疼痛,皮肤破溃后流出粘稠黄绿色脓液,排脓后症状消失。此后每年反复出现右耳

  • 标签: 先天性 第一鳃沟 误诊率 漏诊 异常形成 胸锁乳突肌
  • 简介:AIM:Toevaluatetheefficacyofintralesionalradiofrequencyablationinthetreatmentofperiorbitalsyringomas.·METHODS:Wetriedtheintralesionalradiofrequencyablationfor64patientswithperiorbitalsyringomasfrom2007to2011.Theoperationwasperformedunder2.5loupemagnifications.Thehandpiecewasassembledwithaneedleelectrodeandconnectedtotheradiofrequencyablationapparatus.Theelectrodewastheninsertedintothetargetlesionsindermisanddeliveringinjurytothebaseofthesetumors.Resultswereassessedclinicallybycomparingpre-andpost-treatmentphotographsandpatientsatisfactionrates.·RESULTS:Clinicalimprovementincreasedwitheachsubsequenttreatmentsession.Thepercentofpatientswhoseclinicimprovementgradewere≥3aftereachsessionwasrespectively71.9%(Session1),83.3%(Session2),and100%(Session3).Thestatisticalresultsindicatedtheconcordanceoftheclinicalassessmentandthesatisfactionlevelofpatients(kappa=0.78ofthesession1;kappa=0.82ofthesession2).Themajorityofpatientshadgoodorexcellentcosmeticresults.Postoperatively,therewerenopermanentsideeffectsorrecurrences.·CONCLUSION:Asanewtechniqueofminimallyinvasion,theintralesionalradiofrequencyablationwasfoundtobeaneffective,inexpensive,highlypreciseandsafewayoftreatingperiorbitalsyringomas.

  • 标签: PERIORBITAL syringomas RADIOFREQUENCY ablation TREATMENT