简介:Oculardrugtransportbarriersposeachallengefordrugdeliverycomprisingtheocularsurfaceepithelium,thetearfilmandinternalbarriersoftheblood-aqueousandblood-retinabarriers.Oculardrugdeliveryefficiencydependsonthebarriersandtheclearancefromthechoroidal,conjunctivalvesselsandlymphatic.Traditionaldrugadministrationreducestheclinicalefficacyespeciallyforpoorwatersolublemoleculesandfortheposteriorsegmentoftheeye.Nanoparticles(NPs)havebeendesignedtoovercomethebarriers,increasethedrugpenetrationatthetargetsiteandprolongthedruglevelsbyfewinternalsofdrugadministrationsinlowerdoseswithoutanytoxicitycomparedtotheconventionaleyedrops.Withtheaidofhighspecificityandmultifunctionality,DNANPscanberesultedinhighertransfectionefficiencyforgenetherapy.NPscouldtargetatcornea,retinaandchoroidbysurficialapplicationsandintravitrealinjection.ThisreviewisconcernedwithrecentfindingsandapplicationsofNPsdrugdeliverysystemsforthetreatmentofdifferenteyediseases.
简介:目的探讨带虹膜隔张力环植入手术治疗虹膜缺损的护理措施。方法回顾分析我院所诊治的虹膜缺损患者24例,24例患者均行带虹膜隔张力环植入的手术,针对性的对该手术不同类型的患者加强心理护理、术前准备、术后护理及预防并发症的发生。结果所有患者均根据虹膜缺损的范围和程度选择并放置合适型号的带虹膜隔张力环,术后随访3个月,均未发现张力环、人工晶状体偏位、移位,晶状体囊袋损伤及瞳孔阻滞等现象。结论囊袋内植入带人工虹膜的张力环治疗部分或完全虹膜缺损,取得了较好的治疗效果,开辟了该类疾病治疗的新思路,手术期间应加强患者的心理护理及术后的密切观察,及时采取相应的护理措施,从而减少并发症,提高疗效。
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:目的探讨地塞米松(dexamethasone,DEX)治疗豚鼠爆震性听力损失的给药途径。方法将24只成年豚鼠经脉冲噪声(167dBSPL,间隔2s,80发)暴露后,随机分为3组,每组8只。A组常规耳后切口,将浸透DEX的明胶海绵颗粒置于圆窗龛上。B组在手术显微镜下找到鼓膜,穿刺后将浸透DEX的明胶海绵颗粒置于圆窗龛上。C组手术方法同A组,给予生理盐水。分别于爆震前,爆震后24h及治疗后3周检测豚鼠听性脑干反应(auditorybrainstemresponse,ABR)。琥珀酸脱氢酶染色(succinicdehydrogenase,SDH)基底膜铺片,观察毛细胞。结果ABR检测结果显示:治疗后3周A组和C组ABRclick反应阈移差异有统计学意义(P=0.003);A组和B组,B组和C组比较差异均无统计学意义。SDH基底膜铺片观察3组毛细胞,见A组和B组毛细胞恢复均较C组好,但是A组恢复更佳。结论耳后径路和鼓膜直接穿刺给予DEX对豚鼠爆震性听力损失均有作用,前者效果明显。(中国眼耳鼻喉科杂志,2008,8:15-17)
简介:目的探讨并分析眼科白内障超声乳化手术中表面麻醉给药的观察及护理。方法采用统计分析方法选取2014年3月-2016年2月期间在本院接受治疗的患有白内障疾病患者80例为研究对象,对所有患者采取白内障超声乳化手术同时采取表面麻醉给药方法配合治疗,同时采取术前教育、心理护理、术后护理的综合护理手段帮助治疗,观察并分析患者术后情况。结果经过相应的治疗,患者术后1d、16d、80d视力达到0.5以上占总数的97.5%(78/80),其中视力达No.8及以上患者占总数33.75(27/80),视力达No.3及下患者占总数的2.5%(2/80)。结论针对白内障超声乳化手术中给于表面麻醉治疗的同时实施相应的护理配合治疗可以显著提高患者的疾病治愈率,帮助患者视力恢复,值得深入挖掘。
简介:目的:系统评价白内障超声乳化吸除术前加用非甾体抗炎药(nonsteroidalanti-inflammatorydrugs,NSAIDs)对术后黄斑囊样水肿(cystoidmacularedema,CME)的影响。方法:计算机检索CochraneLibrary、PubMed、BMC、中国期刊全文数据库(CNKI)、维普中文期刊数据库(VIP)。收集NSAIDs的不同给药时机(试验组予以NSAIDs术前及术后局部点眼治疗,对照组予以NSAIDs术后治疗)对白内障超声乳化吸除术后CME及黄斑中心凹厚度影响的临床随机对照试验文献。采用RevMan5.2软件及Stata12.0软件进行Meta分析。结果:共纳入6项研究。术前是否加用NSAIDs对白内障超声乳化吸除术后CME的发生在术后1wk差异无统计学意义(OR=1.58,95%CI:0.48~5.18,P〉0.05)、术后1mo差异无统计学意义(OR=0.78,95%CI:0.30~2.00,P〉0.05),术后3mo差异有统计学意义(OR=0.22,95%CI:0.11~0.43,P〈0.01);黄斑中心凹厚度在术后1wk差异无统计学意义(WMD=-7.20,95%CI:-15.17~0.77,P〉0.05)、术后1mo差异无统计学意义(WMD=-3.98,95%CI:-14.05~6.08,P〉0.05),术后3mo差异有统计学意义(WMD=-18.25,95%CI:-33.80~-2.70,P〈0.05)。结论:术前及术后联合应用NSAIDs治疗可以显著降低白内障超声乳化吸除术后CME的发生,降低术后黄斑中心凹的厚度,提示NSAIDs的术前术后联合应用较单独术后应用更具有优越性。
简介:目的:研究家兔静脉注射头孢哌酮钠/舒巴坦钠在眼内的透过性及蓄积作用。方法:用高效液相色谱法(highperformanceliquidchromatography,HPLC)测定给药后不同疗程时间点各组兔眼房水和玻璃体中的药物浓度。结果:房水中舒巴坦钠的药物浓度分别为23.4±4.8和23.6±3.7mg/L;头孢哌酮钠浓度分别为8.9±1.2和8.9±1.7mg/L;玻璃体中舒巴坦钠浓度分别为71.2±4.6和69.3±6.8mg/L,头孢哌酮钠未检出。结论:头孢哌酮Ca/舒巴坦钠静脉注射后在正常的眼内透过性不良。
简介:AIM:Toassesstheeffectivenessofimmunosuppressantsintheprophylaxisofcornealallograftrejectionafterhigh-riskkeratoplastyandnormal-riskkeratoplasty.METHODS:WesearchedtheCochraneCentralRegisterofControlledTrials(CENTRAL),MEDLINE,EMBASE,CNKI,VIPandreferencelistsofarticles.Dateofmostrecentsearch:18June,2011.Allrandomisedcontrolledtrials(RCTs)assessingtheuseofimmunosupressantsinthepreventionofgraftrejection,irrespectiveofpublicationlanguage.Twoauthorsassessedtrialqualityandextracteddataindependently.Onlydichotomousoutcomes(cleargraftsurvival,ratioofimmunereactionsandsideeffects)wereavailableandwereexpressedasrelativerisk(RR)and95%confidenceintervals(CI).RESULTS:Sevenstudieswereincludedinthisreview.Inthecomparingofmycophenolatemofetil(MMF)withplacebo,theresultsshowedMMFcouldsignificantlyreduceimmunereactionscomparedwithplacebo(RR1.0895%Cl0.95to1.21),butnoeffectoncleargraftsurvival(RR1.1195%Cl0.90to1.35).Incleargraftsurvivalandimmunereactions,MMFandcyclosporineA(CsA)showedsimilareffect(RR1.1195%Cl0.90to1.35,andRR1.48,95%Cl0.56to3.93,respectively).Tacrolimus(FK506)andsteroidshowedsimilareffectsoncleargraftsurvivalandimmunereactions(RR0.32,95%CI0.02to6.21,andRR1.00,95%CI0.88to1.14,respectively).Nodrugrelativesideeffecthasbeenfound.CONCLUSION:MMFmayreduceimmunereactionsinbothnormal-riskandhigh-riskrejectionofpenetratingkeratoplasty.CsAandFK506showedsimilareffectsasMMF.However,duetothelackoflargeclinicaltrials,theevidenceremainweak,thequalityofevidenceswereratedasverylowtomoderate.Large,properlyrandomised,placebo-controlled,doublemaskedtrialsareneededtoevaluatetheeffectofimmunosuppressants.
简介:目的探讨前列腺素类药结合玻璃体腔注射雷珠单抗治疗新生血管性青光眼的效果。方法伴发高眼压的新生血管性青光眼患者160例根据随机数字表法分为治疗组80例与对照组80例,两组都给予复合式小梁切除术,对照组选择拉坦前列腺素辅助治疗,治疗组选择拉坦前列腺素联合玻璃体腔注射雷珠单抗辅助治疗。结果治疗后治疗组与对照组的治疗有效率分别为97.5%和88.8%,治疗组的治疗有效率明显高于对照组(P〈0.05)。两组治疗后最佳矫正视力都明显提高,而眼压都明显下降,与治疗前对比差异明显(P〈0.05);同时治疗后治疗组的最佳矫正视力与眼压也都明显好于对照组(P〈0.05)。治疗期间治疗组的眼结膜充血、前房炎症反应、角膜水肿、一过性视觉模糊等并发症发生率都明显低于对照组(P〈0.05)。所有患者治疗后随访调查6个月,治疗组的治疗后3个月与6个月的复发率分别为1.3%和5.0%,而对照组分别为7.5%和13.8%,治疗组治疗后3个月与6个月的复发率明显少于对照组(P〈0.05)。结论前列腺素类药结合玻璃体腔注射雷珠单抗治疗新生血管性青光眼能促进眼压的降低,改善视力水平,安全性好,降低复发,从而有利于近远期疗效的提高。
简介:AIM:Toaddressissuesininteroperabilitybetweendifferentfundusimagesystems,weproposedawebeyepicturearchivingandcommunicationsystem(PACS)frameworkinconformancewithdigitalimagingandcommunicationinmedicine(DICOM)andhealthlevel7(HL7)protocoltorealizefundusimagesandreportssharingandcommunicationthroughinternet.METHODS:Firstly,atelemedicine-basedeyecareworkflowwasestablishedbasedonintegratingthehealthcareenterprise(IHE)EyeCaretechnicalframework.Then,abrowser/serverarchitectureeye-PACSsystemwasestablishedinconformancewiththewebaccesstoDICOMpersistentobject(WADO)protocol,whichcontainsthreetiers.RESULTS:Inanyclientsysteminstalledwithwebbrowser,clinicianscouldlogintheeye-PACStoobservefundusimagesandreports.Multipurposeinternetmailextensions(MIME)typeofastructuredreportissavedaspdf/htmlwithreferencelinktorelevantfundusimageusingtheWADOsyntaxcouldprovideenoughinformationforclinicians.Somefunctionsprovidedbyopen-sourceOviyamcouldbeusedtoquery,zoom,move,measure,viewOICOMfundusimages.CONCLUSION:Suchwebeye-PACSincompliancetoWADOprotocolcouldbeusedtostoreandcommunicatefundusimagesandreports,thereforeisofgreatsignificanceforteleophthalmology.