简介:目的通过对我区学校视力监测点监测结果进行分析,了解儿童、青少年视力不良的发展动态.方法对我区2000~2001年二所中学二所小学二所幼儿园视力监测结果进行统计分析.结果(1)二所中学二所小学二所幼儿园学生视力不良以屈光不正为主.(2)屈光分析表明近视屈光不正发病率中学最高,占91.85%;其次是小学,占53.47%,但以轻度近视为主;幼儿园学生以远视屈光不正发病率为高,占74.52%,以轻度远视为主.(3)随着年龄的增长,学习任务的增加,视力不良、近视屈光的发生率增加.结论在中小学、幼儿园中进行视力监测和屈光状态分析可早期发现屈光不正和弱视,及时防治,对控制小学生视力不良有重要意义,为了今后更好地做好视力不良的防治工作还需教育、预防、临床等部门密切配合和政府部门政策性的支持.
简介:目的:对湖北地区20~29岁人群的角膜散光情况与不同近视度数的关系进行调查,找出其变化规律。方法:用角膜地形图对随机抽取的2254例湖北地区20~29岁青年居民进行散光度、轴向及近视度数的测定,并分析其变化规律。结果:湖北地区20~29岁居民中,各个近视度段散光在26°~150°范围内所占人数比例最大,各个近视度段均呈现顺规散光人数多于逆规散光。其中女性高度近视段约为75.3%,中度近视段约为82.7%,低度近视段约为87.2%;男性高度近视段约为74.6%,中度近视段约为83.0%,低度近视段约为82.3%。20~29岁男性高度近视段顺规散光人数比例高于其他两组;女性低度近视段顺规散光人数比例低于其他两组,差异有统计学意义。20~29岁人群中女性中度近视段顺规散光人数比例高于同近视度男性组,且女性总体组顺规散光人数比例高于男性总体组,差异有统计学意义。20~29岁男、女性高度近视组200°以内散光人数比例均低于中度近视组,差异有统计学意义。结论:湖北地区20~29岁居民中,各个近视度段散光在26°~150°范围内所占人数比例最大,且各个近视度段不论男女均呈现顺规散光人数多于逆规散光;男性高度近视段顺规散光人数比例高于其他两组,女性低度近视段顺规散光人数比例低于其他两组;女性中度近视段顺规散光人数比例高于同近视度男性组,且女性总体组顺规散光人数比例高于男性总体组;男、女性高度近视组200°以内散光人数比例均低于中度近视组。
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.