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Cet abstract a été assigné à session BSCRS: Belgian Societies of Cataract and Refractive Surgery
TitreOptimized A-constant for a particular lens (XL-Stabi ZO, Carl Zeiss Meditec) and general avice for optimization and IOL calculations formulas
ButTo evaluate the efficacy of the Constant A given by the manufacturer of an aspheric IOL: evaluation of the difference between the subjective spherical equivalent 3 months post surgery and the target refraction.
Méthodes260 eyes from 8 surgical centers were enrolled in this study: 247 eyes received the study lens (XL Stabi ZO, Carl Zeiss Meditec). SRK/T formula was used in 71.7% of the cases.
Patients were divided in 3 groups: short eyes (axial length (AL) < 22mm, normal eyes (22mm25mm).
Data were collected at 1M and 3M.
Deviation from intended refraction was calculated in all cases.
RésultatsThe main efficacy criterion, the evaluation of the difference between the subjective spherical equivalent at 3M and the target refraction showed a slight undercorrection, with a mean value of -0.30D (SD: 0.61). In the short eyes group, -0.43D (SD: 0.76); in the normal eyes group -0.26D (SD: 0.56); in the long eyes group 0.36D (SD: 0.61).
ConclusionThe A Constant for the XL Stabi ZO should be adapted for short and long eyes, or another Formula should be used.
Auteur 1
NomMATHYS
InitialesB
InstitutBrussels Eye Specialists
VilleBrussels
Auteur 2
NomALIO
InitialesJ
InstitutInstituto Oftalmologico de Alicante, Vissum Corporation
VilleAlicante, Spain
Auteur 3
NomMORBELLI
InitialesH
InstitutInstituto Oftalmologico de Albacete, Vissum Corporation (Department of Refractive Surgery and Catara
VilleAlbacete, Spain
Auteur 4
NomLEBRUN
InitialesT
InstitutClinique du Landy
VilleSaint Ouen, France
Auteur 5
NomKHAITRINE
InitialesL
InstitutClinique de Courlancy
Ville Reims, France
Auteur 6
NomRIECK
InitialesP
InstitutCharité - Universitätsmedizin Berlin
VilleBerlin, Germany
Auteur 7
NomDEWILDE
InitialesF
InstitutEye Center Latem
VilleSint Martens Latem
Auteur 8
NomTRABUCCHI
InitialesT
InstitutOspedale di Legnano
VilleLegnano, Italy
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