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。

简介：目的探讨鼻腔鼻窦鳞状细胞癌侵犯眼眶时保留或剜除眼球对生存率和复发率的影响.方法回顾性分析1989年1月～1998年2月我院收治的43例侵犯眶骨壁和眶骨膜的鼻腔、鼻窦鳞状细胞癌患者的临床和随访资料,其中25例剜除眼球,18例保留眼球.比较患者的3年生存率和复发率.结果随访38～126个月,43例患者中,眼球剜除组3年生存率为56%(14/25),局部复发率为36%(9/25),保留眼球组3年生存率为55.5%(10/18),局部复发率为38.8%(7/18),其中1例为眶内复发.结论经术前或术后放疗,对侵犯眶骨壁和眶骨膜的鼻腔、鼻窦鳞癌,保留眼球组与剜除眼球组相比:有相似的局部复发率和生存率,但保留眼球提高了术后生活质量.

简介：目的比较24h眼压监测中夜间即刻坐位眼压值和坐起休息10min后测得的眼压值，探讨夜间眼压的不同测量方法对青光眼24h眼压昼夜波动的影响。方法对已确诊且未用药、未做过手术的48例正常眼压性青光眼及17例原发性开角型青光眼患者进行24h眼压监测，每2h1次，其中测量夜间0：00、2：00、4．00眼压时，逐个唤起患者后立即测，后嘱患者坐起休息10min再测，采用SPSS软件以配对t检验分析比较测量结果。结果夜间即刻坐位眼压值和坐起休息10rain后测得的眼压值差异有统计学意义（P〈0．001），正常眼压性青光眼与原发性开角型青光眼间眼压差值差异有统计学意义（P〈0．05）。结论即刻坐位眼压值能更准确反映夜间眼压，对24h眼压测量及青光眼诊断及治疗更有价值，值得临床应用。

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.

简介：AIM:Todeterminewhethersinglenucleotidepolymorphism(SNP)rs641153isassociatedwiththeriskofage-relatedmaculardegeneration(AMD),weperformedasystematicmeta-analysisof15eligiblestudies.SNPinthecomplementfactorB(CFB)geneisconsideredtohavesignificantassociationwithAMDsusceptibility,butthereisgreatdiscrepancyintheseresults.METHODS:TheeligiblestudieswereidentifiedbysearchingthedatabasesofPubMed,EMBASE,andWebofScience.Oddsratios(ORs)with95%confidenceintervals(CIs)wereusedtoassesstheassociation.AlldatawereanalyzedusingStatasoftware.RESULTS:Theassociationbetweenrs641153andAMDriskwasstatisticallysignificantunderthehomozygousmodel(AAvsGG:OR=0.26,95%CI=0.15-0.45,P_h=0.973,/~2=0.0%,fixedeffects),dominantmodel(AA+GAvsGG:OR=0.49,95%CI=0.40-0.59,P_h=0.004,/~2=56.4%,randomeffects)andrecessivemodel(AAvsGA+GG:OR=0.30,95%CI=0.17-0.51,R_n=0.983,I~2=0.0%,fixedeffects).Thesameresultswerealsoobservedinthestratifiedanalysesbyethnicity,sourceofcontrolandsamplesize.CONCLUSION:Ourmeta-analysissuggeststhatrs641153intheCFBgenemayplayaprotectiveroleinAMDsusceptibility,thelateAMDinparticular,bothinCaucasiansandinAsians.