Optimalincisionsitestoreducecornealaberrationvariationsaftersmallincisionphacoemulsificationcataractsurgery

摘要： AIM:Toanalyzetheeffectofsteepmeridiansmallincisionphacoemulsificationcataractsurgeryonanterior,posteriorandtotalcornealwavefrontaberration.·METHODS:Steepmeridiansmallincisionphacoemulsificationcataractsurgerywasperformedinage-relatedcataractpatientswhichweredividedintothreegroupsaccordingtotheincisionsite:12oclock,9oclockandbetween9and12oclock(BENT)incisiongroups.Thepreoperativeand3-monthpostoperativerootmeansquare(RMS)valuesofanterior,posteriorandtotalcornealwavefrontaberrationincludingcoma,sphericalaberration,andtotalhigher-orderaberrations(HOAs),weremeasuredbyPentacamscheimpflugimaging.Themeanpreoperativeandpostoperativecornealwavefrontaberrationsweredocumented.·RESULTS:Totalcornealaberrationandtotallower-orderaberrationsdecreasedsignificantlyinthreegroupsafteroperation.RMSvalueoftotalHOAsdecreasedsignificantlypostoperativelyinthe12oclockincisiongroup(P<0.001).CornealsphericalaberrationwasstatisticallysignificantlyloweraftersteepmeridiansmallincisionphacoemulsificationcataractsurgeryinBENTincisiongroup(P<0.05)andPearsoncorrelationanalysisindicatedthatsphericalaberrationchangeshadnosignificantrelationshipwithtotalastigmatismchangesinallthreecornealincisionlocation.·CONCLUSION:Cornealincisionofphacoemulsificationcataractsurgerycanaffectcornealwavefrontaberration.The12oclockcornealincisioneliminatedmoreHOAsandthesphericalaberrationsdecreasedinBENTincisiongroupobviouslywhenweselectedsteepmeridiansmallincision.Cataractlensreplacementusingwavefront-correctedintraocularlenscombinedwithoptimizedcornealincisionsitewouldimproveocularaberrationresults. ... （共6页）