简介:目的:观察糖尿病视网膜病变临床前期患者的图形视觉诱发电位、视网膜振荡电位以及视神经纤维层厚度的变化,评估糖尿病视网膜病变临床前期视功能的变化。方法:收集糖尿病视网膜病变临床前期的2型糖尿病患者89例,以及健康志愿者80例。均采用罗兰电生理检查系统检测图形诱发电位(P-VEP)的P100潜伏期和振幅、视网膜振荡电位(Ops)总振幅和各子波振幅,以及RTVueOCT检测视神经纤维层厚度(RNFL),对检测结果进行比较分析。结果:糖尿病组患者的P100潜伏期比正常对照组的P100潜伏期明显延长,差异有统计学意义(t=-10.633,P=0.000)。糖尿病组患者的P100振幅比正常对照组的P100振幅明显降低,差异具有统计学意义(t=3.610,P=0.000)。糖尿病组患者OPS总振幅及各子波振幅均比正常对照组OPS总振幅及各子波振幅明显降低,差异具有统计学意义(t=17.320,P=0.000;t=3.239,P=0.000;t=4.144,P=0.000;t=7.666,P=0.000;t=5.319,P=0.000)。与正常对照组相比,糖尿病组患者的平均RNFL厚度及鼻侧、下方及颞侧RNFL厚度均无明显改变,差异无统计学意义(t=1.730,P=0.085;t=0.664,P=0.547;t=1.923,P=0.063;t=1.814,P=0.072)。而上方RNFL厚度明显变薄,与正常对照组相比差异显著(t=7.989,P=0.000)。结论:在糖尿病视网膜病变临床前期的患者,视乳头及黄斑区均出现了视功能改变。
简介:今天,我们在这里召开2005年全国防盲工作研讨会。这次会议的主要内容是:分析全国防盲工作面临的形势和挑战,研究开展防盲工作的重点和策略;研究制定2006-2010年全国防盲工作规划。同时,还要对“视觉第一中国行动”二期启动以来的工作进行总结,对中期评估事宜和下一步工作进行部署。两天的时间,任务还是比较重的,我希望大家借此机会,广泛交流各地防盲治盲工作情况,借鉴各地有益的工作经验,在充分研讨,制定出我国2006-2010年防盲工作规划的同时,研究探索适合我国国情、进一步推进我国防盲治盲工作的政策措施、有效途径。
简介:·Thisisacasepresentationofaverybizarreopenglobetraumawithanteriorsegmentforeignbody-fishinghookstuckinthecorneaandiris.Complicationsduetothiskindofeyetraumamightbeveryhazardousandwithseriousimpactonvisualfunction.Wearerepresentingourapproachandexperienceofthreestepmanagementofthiskindofeyeinjury:first-extracttheforeignbody,closeandreconstructtheeyeball,second-fightinflammation,andthird-restorethevisualfunctionbycataractsurgery.·
简介:AIM:Tocomparetheeffectoftopicallyadministeredandsubconjunctivallyinjectedbevacizumabonexperimentalcornealneovascularizationinratsfortwoweeksaftertreatment.METHODS:Twenty-eightSprague-Dawleyratsweredividedintofourgroupsof7animals.Eachcornealcenterofrighteyewascauterizedwithsilver/potassiumnitratefor8s.Aftercornealburning,bevacizumab(12.5mg/mL)wastopicallyadministeredthreetimesperday(TBgroup)fortwoweeksorsubconjunctivallyinjectedondays2and4aftercauterization(0.02mL;SBgroup).Asnegativecontrols,ratsreceived0.9%salinetopicallythreetimesperday(TSgroup)orsubconjunctivallyondays2and4(0.02mL;SSgroup).Digitalphotographsofthecorneaweretaken1and2weeksaftertreatmentandanalyzedtodeterminetheareaofcorneacoveredbyneovascularizationasthepercentageofcornealneovascularization.RESULTS:Oneweekaftertreatment,thepercentageofcornealneovascularizationwassignificantlylowerintheTBandSBgroupsthanintheTSandSSgroups(allP<0.05).Twoweeksaftertreatment,thepercentageofcornealneovascularizationwassignificantlylowerintheTBgroupthanintheTSgroup(P<0.05).Inallgroups,thepercentageofneovascularizationwasdecreasingastimepassed(allP<0.05)CONCLUSION:Topicallyadministeredbevacizumabhaslongerstandinganti-angiogeniceffectthansubconjunctivallyinjectedbevacizumabincornealneovascularizationfollowingchemicalinjuryinrats.