简介:AIM:ToinvestigatethesideeffectsofthecommonlyusedlasertreatmentalongwithtestingtheneuroprotectiveeffectofbFGFonapotentialretinalimpairment.METHODS:Todothis,30chinchillapigmentedadultmalerabbitsweredividedintothecontrolandexperimentalgroups.ThecontrolandexperimentalgroupsunderwentbothlaserapplicationandbFGFtreatment.Theretinaltissueimpairmentanditsrenewalrateweretestedunderthelightandelectronmicroscopicallevels.RESULTS:Thefocallaserapplicationonrabbiteyescausedmorphologicalalterationsbothintheapplicationregionandintheneighbouringareas.Inthedamagedareas,theouternuclearlayeroftheneuralretinawasalmostdisappeared,retinapigmentepitheliumwasinterrupted,theretinapigmentepitheliummigratedintraretinally,andthedamagedregionalongwithneighbouringareasseemedtobenotseparated.bFGFapplicationjustafterthelaserphotocoagulation,revealedbetterresultsinapplicationareas.CONCLUSION:ItcouldbesuggestedthatthebFGFapplicationfollowinglaserphotocoagulationmighthaveprotective,repairingandwoundhealingeffectsontheretina.
简介:目的:比较甲基强的松龙静脉冲击治疗及眼外肌手术治疗甲状腺相关性眼病(thyroid-associatedophthalmopathy,TAO)前后眼压(intraocularpressure,IOP)的变化。方法:回顾性分析收集2008-01/2010-12于我院眼科就诊的26例42眼TAO患者,患者行甲基强的松龙静脉冲击治疗或眼外肌手术,比较术前、术后第一眼位及上视时的眼压变化。结果:患者16例32眼采用甲强龙冲击治疗,治疗前平均眼压第一眼位时为21.13±4.10mmHg,向上注视时为23.75±5.67mmHg,治疗后分别为16.81±3.69mmHg(P〈0.05),18.50±4.03mmHg(P〈0.05);10例10眼采用眼外肌斜视手术,术前平均眼压第一眼位时为18.40±2.49mmHg,上视时为24.70±3.63mmHg,术后分别为17.30±1.55mmHg(P〉0.05),18.60±2.20mmHg(P〈0.01);术前眼压≥21mmHg的TAO患者眼压下降明显(P〈0.05)。结论:两组患者用不同的方法治疗后眼压显著下降,但是眼外肌斜视手术前后眼压在第一眼位时的变化没有统计学差别。
简介:目的:观察糖尿病视网膜病变(diabeticretinopathy,DR)患者行全视网膜光凝(panretinalphotocoagulation,PRP)后服药前及服药2mo后患眼的全视野视网膜电图(fullfieldelectroretinogram,ERG)变化,探讨递法明片对DR暗适应功能的保护作用。方法:选择在我医院就诊的重度非增殖性糖尿病视网膜病变(nonproliferativediabeticretinopathy,NPDR)患者55例55眼,随机分为治疗组和对照组。两组均行全视网膜光凝,治疗组光凝后口服递法明片,对照组口服维生素B1片2次/d,10mg/次。PRP后服药前及服药2mo后行全视野视网膜电图检查,观察其暗视视杆反应的变化并进行统计学处理。结果:两组患者服药前及服药2mo后,暗视视杆反应bT值组内及组间比较差异均无统计学意义(P〉0.05);治疗组bA值服药2mo后与服药前相比振幅升高,差异有统计学意义(P〈0.05),与对照组相比治疗组振幅升高较大,差异有统计学意义(P〈0.05)。结论:递法明片可减轻PRP治疗对视网膜的损害,改善患者的暗适应功能。
简介:研究显示,趋化因子受体3(chemokinereceptor3,CCR3)在眼部主要分布于视网膜色素上皮细胞中,亦表达于脉络膜血管内皮细胞(CECs)中。CCR3的特异性高表达在湿性年龄相关性黄斑变性(age-relatedmaculardegeneration,AMD)中被发现,并被证明在湿性AMD患者脉络膜新生血管(choroidalneovascularization,CNV)的产生中具有重要作用。本文拟对CCR3的结构、功能、目前研究存在的问题及未来的研究方向做一综述。相信随着对CCR3研究的进一步深入,必将帮助我们寻找到一种湿性AMD诊断和治疗的新方法,同时也可能对其它CNV性疾病研究以及新的抗CNV药物提供重要参考。
简介:病因良性阵发性位置性眩晕首先为Barany(1921年)所描述.DixHallpike和Cawthorne(1952和1954年)又作了进一步研究.
简介:目的:探讨褪黑素对过氧化氢诱导晶状体上皮细胞氧化损伤的保护作用。方法:晶状体上皮细胞传代培养后,分别加入不同浓度褪黑素预处理12h后,加入100μmol/LH2O2继续孵育24h,MTT比色法检测褪黑素对H2O2诱导的晶状体上皮细胞活力的影响,流式细胞仪检测细胞凋亡率,比色法检测凋亡相关因子Caspase-3及Caspase-9的活性。结果:MTT结果显示褪黑素对晶状体上皮细胞活性无影响,该药物可以抑制过氧化氢诱导的细胞活性的下降,流式细胞计数结果显示褪黑素可以抑制过氧化氢诱导的细胞凋亡,此外,褪黑素还可以减少过氧化氢所致晶状体上皮细胞内Caspase-3及Caspase-9的活性,并且,伴随褪黑素作用时间的延长其活性呈下降趋势。结论:褪黑素可以明显抑制过氧化氢诱导的晶状体上皮细胞的凋亡,从而为寻求有效的防治白内障药物提供可靠的实验依据。
简介:AIM:Toexploretheeffectofsaturatedhydrogensalineonbluelight-inducedretinaldamageinrats.·METHODS:Theretinaldamageofratswasinducedbybluelightexposurefor6hoursandexamined8hours,16hoursand24hoursaftertheexposure.OnehundredfemaleSprague-Dawleyratswererandomlydividedintofourgroups.Group1included30ratsreceivedlightexposurewithoutanyothertreatment.Group2included30ratsreceivedlightexposurewithintraperitonealinjectionofnormalsaline.Group3included30ratsreceivedlightexposurewithintraperitonealinjectionofsaturatedhydrogensaline.AndGroup4includedtheother10ratswhichdidnotreceiveanytreatment.Theamountofintraperitonealinjectionofsaturatedhydrogensalineandnormalsalinewascalculatedintheratioof1ml/100gofratweight.SpecimenswerecollectedandprocessedbyH-Estaining,ultrastructureobservation,biochemicalmeasurement.Morphologicalchangeswereobservedbylightmicroscopeandtransmissionelectronmicroscope(TEM)andtheretinalouternuclearlayer(ONL)thicknesswasmeasuredbyIPP6.0,whilethemalondialdehyde(MDA)wasmeasuredbycolorimetricdeterminationat532nm.·RESULTS:AlthoughthestructureofretinainGroup1andGroup2wasinjuredheavily,theinjuryinGroup3wasmild.ThedifferencesbetweenGroup1andGroup2werenotsignificant.ComparedwiththeratsinGroup1andGroup2,theonesinGroup3hadmoreclearlydemarcatedretinastructureandmoreorderedcellsbylightmicroscopeandTEMobservation.TheONLthicknesses(400times)offourgroupsateachtimepointexceptbetweenGroup1andGroup2weresignificantlydifferent(P<0.05).ThethicknessesoftheONLinGroup1atthreetimepointswere30.41±4.04μm,26.11±2.82μmand20.63±1.06μm,inGroup2were31.62±4.54μm,25.08±3.63μmand19.07±3.86μm,inGroup3were29.75±3.62μm,28.83±1.97μmand27.61±1.83μm.InGroup4themeanofthethicknesswas37.35±1.37μm.Astimewentby,thedamageg
简介:目的:分析眼科住院患者眼外伤相关因素,提供当地眼外伤流行病学相关资料。方法:选取2007-01/2011-12于我院眼科住院的眼外伤患者1137例1610眼,对其一般情况、致伤原因、预后及并发症进行统计学分析。结果:患者男女比例为4.77∶1,高峰年龄为20~49岁;职业以工人、农民等体力劳动者为主;前两位致伤性质为钝挫伤和穿孔伤,其中穿孔伤的平均致盲率最高(45.65%)。5a来相邻年度间致伤性质构成比无显著差异(χ2=14.586,P=0.367)。眼外伤并发症多混合存在,以外伤性白内障、前房积血、葡萄膜炎更多见。结论:应提高人们对于眼外伤的预防意识,对眼外伤患者可给予及时救治,降低眼外伤致盲率。
简介:我科采用选择性激光小梁成形术(selectivelasertrabeculoplasty,SLT)治疗穿透性角膜移植术(penetratingkeratoplasty,PKP)后继发性青光眼6眼,报告如下。