最新白内障英文课件课件ppt.ppt

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1、白内障英文课件AnatomyandPhysiologyofthelensPosition:Thelensconnectedwiththeciliarybodybythesuspensoryligamentthatfixesitbehindtheiris,infrontofthevitreous.EYENo.22广西医科大学第一临床医学院眼科Anatomy:Thelensiscomposedoflenscapsuleandlensfiber.Thelenscapsuleisalayerofelastichomogeneousmembrane.Thelensfibersa

2、retheextensionandelongationforwardsandbackwardsoftheepithelialcellsattheequator.3广西医科大学第一临床医学院眼科CataractCataractisthefirstcauseofblindnessinChinaandothermanydevelopingcountry.Thereareonemillionofcataractsuffererwhoareinneedofoperationtorestoretheirvisions.EYENo.47广西医科大学第一临床医学院眼科Classifi

3、cationAccordingtotheageofoccurring:CongenitalcataractInfantilecataractJuvenilecataractAdultcataractAge-relatedcataract(senile)EYENo.58广西医科大学第一临床医学院眼科Accordingtoetiology:Traumaticcataract:bluntorpenetratinginjuryComplicatedcataract:uveitisMetaboliccataract:diabetesDrug-inducedortoxiccata

4、ractDevelopingcataractAfter-cataract9广西医科大学第一临床医学院眼科age-relatedcataractItisthemostcommoncataract,oftenseenintheoldswithagemorethan50yearsold.Theincidenceofthediseaseis100%whenthepatientexceed80yearsold.EYENo.610广西医科大学第一临床医学院眼科PathologicmechanismThediseaseisrelatedwithseveralfactor:Ultra

5、violetrayGeneticfactorSystemicdiseasesuchasdiabetes,hypertension.Lensnourishmentandmetaboliccondition11广西医科大学第一临床医学院眼科Clinicalfindings:BilateraldiseaseFixedblackspotbeforetheeyesVisualdecreasewithoutpainRefractivechangeEYENo.712广西医科大学第一临床医学院眼科classificationAccordingtothesitewherecatarac

6、tbeginstoform:corticalAnteriorcapsulePosteriorcapsulesubcapsularAge-relatedcataractEYENo.8nuclear13广西医科大学第一临床医学院眼科corticalcataractItisdividedinto4stages:Incipientstage:TobeginopacityappearsattheperipheryofanteriorandposteriorcortexThecenterlensisalmostclear,thepupillaryareaisn’taffected

7、,commonlywithoutinfluencingvision.Tobediagnoseaftermydriasisunderslit-lampexamination.TodevelopslowlyEYENo.914广西医科大学第一临床医学院眼科EYENo.10Immaturestage(intumescentstage)TheopacitygraduallybecomesobviousThecortexabsorbswatertobecomeswollenIrisprojection:thecharacteristicofthisstageVi