简介:目的了解安阳县≥40岁自觉视力障碍的农民盲与低视力的患病率及致盲原因.方法安阳县各行政村中,≥40岁自觉视力障碍的农民为筛查对象.采用WHO盲与低视力标准和白内障诊断标准.由眼科医生作眼部检查.对所有视力<0.3的患眼进行主要病因诊断,确诊所有白内障患者,并筛选出需手术治疗者.结果共检查853例,盲目患者23例,患病率2.70%,低视力患者99例,患病率4.27%,致盲的主要眼病依次为白内障、角膜病、青光眼、视网膜病等.共筛查出533例白内障,行白内障手术治疗301人次,脱残率98%,脱盲率99.34%.结论白内障仍是盲和低视力的首要病因,防盲治盲的重点仍是白内障复明手术.
简介:AIM:Toinvestigatethepossiblerelationshipbetweentheinfluencingfactorsoccurringbeforeandduringbirthinfull-terminfantsandtheoutcomeofretinopathy.·METHODS:Totally816full-terminfantsadmittedintheneonateintensiveunitofBoaiHospitalofZhongshanbetween1May,2008and30June,2011wereincludedinthestudy.Fundusexaminationwasperformedandevaluatedindividuallyonthemattheageof48hoursafterdelivery,2weeksand1month.Somepossibleriskfactorshappeningprenatallyorduringdeliverysuchaspregnantrelatedhypertension,placentaprevia,placentalabruptionetc,aswellassomeneonatalriskfactorssuchasneonatalasphyxia,hypoxic-ischemicencephalopathy(HIE),lowbirthweightetc,wererecordedandevacuated.Thentheeffectoftheriskfactorsoffull-terminfantsonretinopathywasstudied.·RESULTS:Theincidenceofretinalhemorrhageoffull-terminfantswithprenatalpregnantrelatedhypertension(PRH)ofthemother(43.6%)wassignificantlyhigherthanthatoffull-terminfantswithout(8.0%).(P<0.001).Theincidenceofretinalhemorrhageoffull-terminfantswithneonatalasphyxiaand/orhypoxic-ischemicencephalopathy(HIE)(29.3%)wassignificantlyhigherthanthatofthosewithout(15.7%),butcorrelationwasnotfoundbetweentheseverityofretinahemorrhageandthedegreeofhypoxicdisease.Apalecolorofopticdiscwasassociatedwithalowbirthweightoffull-terminfant.Full-terminfantswithbirthweighlessthan2500ghadasignificanthigherincidenceofretinopathythanthosewithbirthweightequalormorethan2500g(P<0.001).·CONCLUSION:Themaininfluencingfactorswhichleadtoretinopathyofhighriskfull-terminfantsareprenatalfactorssuchasPRH,andsomeneonatalriskfactorssuchasasphyxia,hypoxic-ischemicencephalopathy,andlowbirthweight.
简介:·Descemet’smembranedetachment(DMD)canbeapotentiallyseriouscomplicationofintraocularsurgeryoroculartrauma.Thecauseisnotveryclear.WearetryingtoremindanawarenessofthespectrumofDMDresultingfromtrabeculectomybypresentingacaseofextensiveDMDaftertrabeculectomywhichwassuccessfullyrepaired.
简介:Oculardrugtransportbarriersposeachallengefordrugdeliverycomprisingtheocularsurfaceepithelium,thetearfilmandinternalbarriersoftheblood-aqueousandblood-retinabarriers.Oculardrugdeliveryefficiencydependsonthebarriersandtheclearancefromthechoroidal,conjunctivalvesselsandlymphatic.Traditionaldrugadministrationreducestheclinicalefficacyespeciallyforpoorwatersolublemoleculesandfortheposteriorsegmentoftheeye.Nanoparticles(NPs)havebeendesignedtoovercomethebarriers,increasethedrugpenetrationatthetargetsiteandprolongthedruglevelsbyfewinternalsofdrugadministrationsinlowerdoseswithoutanytoxicitycomparedtotheconventionaleyedrops.Withtheaidofhighspecificityandmultifunctionality,DNANPscanberesultedinhighertransfectionefficiencyforgenetherapy.NPscouldtargetatcornea,retinaandchoroidbysurficialapplicationsandintravitrealinjection.ThisreviewisconcernedwithrecentfindingsandapplicationsofNPsdrugdeliverysystemsforthetreatmentofdifferenteyediseases.
简介:AIM:Toevaluatetheeffectofbrinzolamide-timololfixedcombinationonintraocularpressure(IOP)aftercataractsurgery.METHODS:Thestudyincluded92eyesof87patientswhounderwentcataractsurgeryandintraocularlensimplantation.Patientsscheduledforphacoemulsificationwereassignedto1of2groups.Thetreatmentgroupreceived1dropofbrinzolamide-timololfixedcombinationimmediatelyaftersurgery,andthecontrolgroupreceivednotreatment.TheIOPwasmeasuredpreoperativelyandat2hand24hpostoperatively.RESULTS:ThemeanIOPchangewaslowerinthetreatmentgroupthaninthecontrolgroupat2hpostoperatively.ThedifferencebetweenthemeanIOPvaluesofthetwogroupsat2hpostoperativelywasfoundtobestatisticallysignificant.Twenty-fourhoursafterthesurgery,themeanIOPchangewasstillhigherinthecontrolgroupwhencomparedtothetreatmentgroup.CONCLUSION:ThefixedcombinationbrinzolamidetimololcaneffectivelyreduceIOPaftercataractsurgery.
简介:<正>DearSir,IamProf.BeuyJoobfromSanitation1MedicalAcademicCenter,Bangkok,Thailand.Iwritetodiscusstherecentpublicationonproteomicanalysisindiabeticretinopathy(DR).Liuetal[1]concludedthattheirapproachbytwodimensionalfluorescencedifferencegelelectrophoresis(2D-DIGE)combinedwithmatrix-assistedlaser
简介:·Thetherapeuticeffectofselenium(Se)hasalreadybeenproveninthyroiddiseaseandthyroidassociatedophthalmopathy(TAO).InspiteofclearscientificproofofitsbenefitsinTAO,thereappearstobenoclearagreementamongthecliniciansregardingitsoptimumdose,durationofthetreatment,efficacyandsafetytodate.Inthisreview,theauthorsummarisesthefindingsof135Englishlanguagearticlespublishedonthissubjectoverthepastfourdecadesfrom1973to2013.TheregulationandmetabolismofthyroidhormonesrequireasteadysupplyofSeandrecentstudieshaverevealedseveralpossiblemechanismsbywhichSeimprovestheseverityofthyroiddiseaseandTAO.Thesemechanismsinclude1)inhibitoryeffectofHLA-DRmoleculeexpressiononthyrocytes;2)profoundreductionsofthyroidstimulatinghormone(TSH)receptorantibodies(TSHR-Ab)andTPOantibodies(TPO-Ab);3)preventionofdysregulationofcell-mediatedimmunityandBcellfunction;4)neutralisingreactiveoxygenspecies(ROS)andinhibitionofredoxcontrolprocessesrequiredfortheactivation,differentiationandactionoflymphocytes,macrophages,neutrophils,naturalkillercellsinvolvedinbothacuteandchronicorbitalinflammationinTAO;5)inhibitionofexpressionofproinflammatorycytokinesand6)inhibitionofprostaglandinandleukotrienesynthesis.AnincreasedoxidativestresshasbeenobservedinbothacuteandchronicphasesofthyroiddiseasewithraisedtissueconcentrationsofROS.ThebenefitsofSesupplementationinindividualswithTAOappeartobeproportionatetothedegreeofsystemicactivityofthethyroiddisease.ThemaximalbenefitofSesupplementationisthereforeseeninthesubjectswhoarehyperthyroid.RestorationofeuthyroidismisoneofthemaingoalsinthemanagementofTAOandwhenanti-thyroiddrugsarecombinedwithSe,thepatientswithGraves’disease(GD)andautoimmunethyroiditis(AIT)achievedeuthyroidismfasterthanthosetreatedwithanti-thyroiddrugsalone.SestatusofnormaladulthumanscanvarywidelyandSe
简介:目的:探讨儿童瞬目症BUT情况,为临床治疗提供依据。方法:215例患者均排除全身疾患,检查角膜、结膜、屈光不正等,着重检查BUT,详细了解患者病史,不良生活习惯等,治疗上停用含有防腐剂及激素类滴眼液,避免及纠正不良卫生及生活习惯,心理治疗,合理用眼,矫正屈光不正,给予不含防腐剂的滴眼液点眼,如3g/L艾丽滴眼液3次/d点眼,需用抗生素的给予可乐必妥滴眼液3~4次/d点眼,酌情给予抗病毒及维生素类药物。结果:215例患者BUT小于10s者197例(91.6%)326眼,其中5S以下123例224眼。本组215例病例中经过7~28d治疗,173例(80.5%)治愈,37例(17.2%)好转,5例(2.3%)无效,均未患眼部疾病,且不配合治疗,仍每天看电视或玩电脑游戏2h以上。经治疗BUT正常者192例(89.3%),好转19例(8.8%)无效者4例(1.9%)。随访1~6mo,复发31例,均为长期看电视、玩电脑、习惯揉眼者,BUT检查再次异常者,重复治疗后治愈或好转。结论:泪膜的保持并发挥其生理功能与瞬目动作休息相关,我们认为泪膜稳定性差是瞬目症的另一重要因素,BUT检查在诊治儿童瞬目症中起着关键的作用,它可以正确指导医生合理用药,使患者早日康复,而且简单易行,无痛苦,儿童易接受。我们建议BUT可作为儿童瞬目症的常规检查。
简介:目的研究传入神经物质-谷氨酸在小鼠耳蜗Corti器中的表达。方法应用免疫组化技术简洁而又成功地在光镜下对小鼠游离耳蜗Corti器中谷氨酸进行定位。结果显示小鼠耳蜗内,外毛细胞染色阳性,染色颗粒细而均匀。克服了谷氨酸神经递质用传统常规前包埋染色技术电镜下不能显示的缺点。结论证实谷氨酸是毛细胞的传入性神经递质。
简介:·AIM:Toinvestigatetheantifibroticeffectoffreeze-driedbilayeredfibrin-bindingamnioticmembraneontrabeculectomyinarabbitmodel.·METHODS:Twenty-fourJapanesewhiterabbitswererandomizedintothreegroups:theexperimentalgroup(oculartrabeculectomyincombinationwithfreeze-driedbilayeredfibrin-bindingamnioticmembranetransplantation),thecontrolgroup(oculartrabeculectomyincombinationwithnaturalbilayeredfibrin-bindingamnioticmembrane)andtheblankgroup(singletrabeculectomy).Clinicalobservation,hematoxylin-eosinstaining,Massionstaining,real-timePCRandimmunohistochemistryforα-SMAwereperformedondays7,14,21and30followingsurgery.·RESULTS:Statisticaldifferenceswerenotedinsurvivalanalysisandintraocularpressure(IOP)amonggroupsondays7,14,21and30followingsurgery.Histology,immunoh-istochemistryandreal-timePCRfurtherdemonstratedthattrabeculectomyincombinationwithfreeze-driedbilayeredfibrin-bindingamnioticmembraneresultedingoodwoundhealingandnoscarformation.·CONCLUSION:Self-madefreeze-driedbilayeredfibrin-bindingamnioticmembranemayinhibittheformationofscarringinglaucomaaftertrabeculectomy.·
简介:AIM:Toinvestigatethecharacteristicsandcriterionofgraftrejectioninmicemodel.METHODS:C57BL/6orBALB/cmicecornealgraftsweregraftedontoBALB/chosts.Eachgroupwasdividedintotwosubgroupsaccordingtothecornealopacityscores12daftertransplantation.Thecharacteristicsofopacityandneovascularizationwereobserved.Miceofthe12th,50thdayaftertransplantation,thegraftsbiopsyofmiceinallogeneicgroup1,whichopacityscoreexceed3,werepreparedforhistologicalobservationandthoserestoretransparentwereendothelialstained.RESULTS:Therewasnodifferenceofcornealopacityscoreonthe7thand12thdayafteroperation;thehistologicalresultshadnodisparitybetweensyngeneicgroupandallogeneicgroup.Onthe12thdayaftersurgery,theturbiditycurvewasapparentingraftswithopacityscore<2.Mononuclearcellswereshowningraftswithopacityscorereached3inallogeneicgroup1.Differentrejectionperformancewasobservedintissuesectionsonthe50thdayaftersurgery.CONCLUSION:Grafts,opacityscoreexceeds3fromthe7thtothe12thdayafteroperationcouldnotbejudgedasarejection.Weshouldpaymoreattentiontothevariationofgraftsopacitysince12daftercornealtransplantation.