Accuracy of Intraocular Lens Power Calculation Using Anterior Chamber Depth from Two Devices with Barrett Universal II Formula
نویسندگان
چکیده
منابع مشابه
Effect of anterior chamber depth on the choice of intraocular lens calculation formula
PURPOSE To investigate the effect of anterior chamber depth (ACD) on the refractive outcomes of the SRK/T, Holladay 1, Hoffer Q and Haigis formulae in short, normal, long and extremely long eyes. METHODS This retrospective study involved patients who had uncomplicated cataract surgery. Preoperative axial length (AL) was divided into four subgroups: short (< 22.00 mm), normal (22.00-24.49 mm),...
متن کاملChanges in Anterior Chamber Depth after Phacoemulsification in Pseudoexfoliative Eyes and their Effect on Accuracy of Intraocular Lens Power Calculation
OBJECTIVES To compare anterior chamber depth (ACD) changes after phacoemulsification surgery in patients with pseudoexfoliation syndrome (PEX) and normal patients using an anterior segment imaging method. Another aim of this study was to evaluate the effect of these changes on the accuracy of intraocular lens (IOL) power calculation and postoperative refraction. MATERIALS AND METHODS Twenty-t...
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We studied 400 eyes which underwent cataract extraction with posterior chamber intraocular lens (IOL) implantation to compare the predictive accuracy of various IOL power calculation formulae. The new Sanders-Retzlaff-Kraff (SRK) II formula was more accurate than the original SRK and Binkhorst II formulae. Modification of the A constants used in the SRK II formula to make it 'surgeon specific' ...
متن کاملMatrix formula for intraocular lens power calculation.
The matrix calculation was applied to Gaussian optics. Matrices were defined for a single diopter, a lens, an association of two centered systems having the same axis when the origins are taken at the vertices of the first and last refracting surfaces. The matrix formula then was used to calculate the power of the emmetropizing lens implant, and its results compared with the ones obtained by fi...
متن کاملanterior chamber depth changes after phacoemulsification and intraocular lens implantation
purpose: to determine anterior chamber depth (ac depth) changes during a 6 month period after phacoemulsification cataract surgery and foldable intraocular lens (iol) implantation. methods: in a cross-sectional study, 85 eyes of 85 patients were evaluated for ac depth and capsulo-rrhexis size one and six months after the procedure. results: patients included 44 male and 41 female subjects with ...
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ژورنال
عنوان ژورنال: Journal of Ophthalmology
سال: 2019
ISSN: 2090-004X,2090-0058
DOI: 10.1155/2019/8172615