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Deze abstract is toegekend aan sessie BSCRS: Belgian Societies of Cataract and Refractive Surgery
TitelOptimized A-constant for a particular lens (XL-Stabi ZO, Carl Zeiss Meditec) and general avice for optimization and IOL calculations formulas
DoelTo 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.
Methodes260 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.
ResultatenThe 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).
ConclusieThe A Constant for the XL Stabi ZO should be adapted for short and long eyes, or another Formula should be used.
Auteur 1
NaamMATHYS
InitialenB
InstituutBrussels Eye Specialists
StadBrussels
Auteur 2
NaamALIO
InitialenJ
InstituutInstituto Oftalmologico de Alicante, Vissum Corporation
StadAlicante, Spain
Auteur 3
NaamMORBELLI
InitialenH
InstituutInstituto Oftalmologico de Albacete, Vissum Corporation (Department of Refractive Surgery and Catara
StadAlbacete, Spain
Auteur 4
NaamLEBRUN
InitialenT
InstituutClinique du Landy
StadSaint Ouen, France
Auteur 5
NaamKHAITRINE
InitialenL
InstituutClinique de Courlancy
Stad Reims, France
Auteur 6
NaamRIECK
InitialenP
InstituutCharité - Universitätsmedizin Berlin
StadBerlin, Germany
Auteur 7
NaamDEWILDE
InitialenF
InstituutEye Center Latem
StadSint Martens Latem
Auteur 8
NaamTRABUCCHI
InitialenT
InstituutOspedale di Legnano
StadLegnano, Italy
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