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1、白內(nèi)障英文課件AnatomyandPhysiologyofthelensPosition:Thelensconnectedwiththeciliarybodybythesuspensoryligamentthatfixesitbehindtheiris,infrontofthevitreous.EYENo.22廣西醫(yī)科大學(xué)第一臨床醫(yī)學(xué)院眼科Anatomy:Thelensiscomposedoflenscapsuleandlensfiber.Thelenscapsuleisalayerofelastichomogeneousmembrane.Thelensfibersa
2、retheextensionandelongationforwardsandbackwardsoftheepithelialcellsattheequator.3廣西醫(yī)科大學(xué)第一臨床醫(yī)學(xué)院眼科CataractCataractisthefirstcauseofblindnessinChinaandothermanydevelopingcountry.Thereareonemillionofcataractsuffererwhoareinneedofoperationtorestoretheirvisions.EYENo.47廣西醫(yī)科大學(xué)第一臨床醫(yī)學(xué)院眼科Classifi
3、cationAccordingtotheageofoccurring:CongenitalcataractInfantilecataractJuvenilecataractAdultcataractAge-relatedcataract(senile)EYENo.58廣西醫(yī)科大學(xué)第一臨床醫(yī)學(xué)院眼科Accordingtoetiology:Traumaticcataract:bluntorpenetratinginjuryComplicatedcataract:uveitisMetaboliccataract:diabetesDrug-inducedortoxiccata
4、ractDevelopingcataractAfter-cataract9廣西醫(yī)科大學(xué)第一臨床醫(yī)學(xué)院眼科age-relatedcataractItisthemostcommoncataract,oftenseenintheoldswithagemorethan50yearsold.Theincidenceofthediseaseis100%whenthepatientexceed80yearsold.EYENo.610廣西醫(yī)科大學(xué)第一臨床醫(yī)學(xué)院眼科PathologicmechanismThediseaseisrelatedwithseveralfactor:Ultra
5、violetrayGeneticfactorSystemicdiseasesuchasdiabetes,hypertension.Lensnourishmentandmetaboliccondition11廣西醫(yī)科大學(xué)第一臨床醫(yī)學(xué)院眼科Clinicalfindings:BilateraldiseaseFixedblackspotbeforetheeyesVisualdecreasewithoutpainRefractivechangeEYENo.712廣西醫(yī)科大學(xué)第一臨床醫(yī)學(xué)院眼科classificationAccordingtothesitewherecatarac
6、tbeginstoform:corticalAnteriorcapsulePosteriorcapsulesubcapsularAge-relatedcataractEYENo.8nuclear13廣西醫(yī)科大學(xué)第一臨床醫(yī)學(xué)院眼科corticalcataractItisdividedinto4stages:Incipientstage:TobeginopacityappearsattheperipheryofanteriorandposteriorcortexThecenterlensisalmostclear,thepupillaryareaisn’taffected
7、,commonlywithoutinfluencingvision.Tobediagnoseaftermydriasisunderslit-lampexamination.TodevelopslowlyEYENo.914廣西醫(yī)科大學(xué)第一臨床醫(yī)學(xué)院眼科EYENo.10Immaturestage(intumescentstage)TheopacitygraduallybecomesobviousThecortexabsorbswatertobecomeswollenIrisprojection:thecharacteristicofthisstageVi
