14Learning objectivesBy the end of the lecture the students would be able toDefine the various disorders of malposition of the lidsClassify ectropion, entropion & ptosis & correlate their clinical presentation with the underlying structural and functional disorderIdentify the complications of ectropion, entropion & ptosisOutline the management of ectropion, entropion & ptosis
15Disorders of malposition of the lids EctropionEntropionPtosisLagophthalmosTrichiasis (disorder of eyelashes)
16What are the factors responsible for the normal positioning of the eyelids ?
23Clinical presentation SymptomsWateringItching and burningPhysical appearance specific to the disorderSignsMalposition of the lid marginRed eyesKeratinized conjunctivaCorneal signs; punctate stainingSnap test for lid laxity
24EctropionDefinitionOutward rolling of the lid margin is called ectropionTypesCongenitalAcquiredInvolutionalCicatricalParalyticMechanical