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1、ThicknessvariationswithinendothelialgraftsforDSAEKsurgery.AspectraldomainanteriorsegmentOCTstudyAlbertoNeri,RosachiaraLeaci,PatriziaScaroni,ClaudioMacalusoOphthalmology,UniversityofParma,ItalyTheauthorshavenofinancialinterestinthesubjectmatterofthisposterDSAEKDescemetStrippi
2、ngAutomatedEndothelialKeratoplastyCurrentlythestandardprocedureforendothelialpathology.Surgicalprocedure:DescemetstrippingInsertionoftheendothelialgraftAdesionwithairbubbleMicrokeratome(orfemtosecondlaser)cut:asportationofa300/350/400µmanteriorlamellaDonorbuttonharvesting:Tr
3、ephinationThenormalcorneaisthickerintheperipheryandthinnerinthecenter.Tissueharvestingwithmicrokeratomeandfemtolaser,thatmeasurelamellarthicknessfromepithelialsurface,createsregularlamellaeforanteriorkeratoplastytechniques,buttheremainingendotheliallamellae,thataretheoneused
4、forDSAEK,necessarilychangeinthicknessfromcentertoperiphery.Crosssectionalprofile=MeniscusPURPOSEToevaluatevariationsinthicknessofendothelialgraftsforDSAEKsurgerydependentonbotheccentricityandmeridianorientationusinghighresolutionanteriorsegmentOCT(CASIA®,Tomey,Japan).MATERIA
5、LSandMETHODS20eyesof20patientswhounderwentDSAEKsurgerywereexamined.FullanteriorsegmentscanswerecapturedwithCASIA®OCT.Theopticalcentreofthecorneaandeightmeridians(0°,45°,90°,135°,180°,225°,270°and315°)wereanalyzedwiththeFLAPTOOL,thatallowedpreciseidentificationandmeasuremento
6、fendothelialgraftthickness.Flapthicknesswasmeasuredatthecenterandat1,5mmand3mmeccentricityalongeachmeridian.ANALYSISDATAforeachanalyzedeye(20):Centralflapthickness8thicknessvaluesat1.5mmeccentricity8thicknessvaluesat3mmeccentricityDescriptiveanalysisofthicknessvalueswasperfo
7、rmedforeacheccentricity.Todescribethevariationinthicknessatagiveneccentricity,theSDofthecorrespondingeightmeasurementswascalculatedineveryeye.Casia®FlapTool:MeasurementofTotalCornealThickness+FlapthicknessTheopticalcenterofthecorneaandeightmeridians(0°,45°,90°,135°,180°,225°
8、,270°and315°)wereanalyzedwiththeFLAPTOOL,thatallowedpreciseidentificationan
