Analyzing the effective lens position and refractive outcomes of complex IOL fixation techniques
What:
Paper Presentation | Présentation d'article
When:
5:04 PM, Saturday 2 Jun 2018
(3 minutes)
Where:
How:
Authors: Yogesh Patodia, Jithin Yohannan, Ayda Shahidi, Alexander Kaplan, Iqbal Ike Ahmed
Author Disclosure Block: Y. Patodia: None. J. Yohannan: None. A. Shahidi: None. A. Kaplan: None. I. Ahmed: Grant/research support; Name of Commercial Company(s); Alcon, Abbott Medical Optics, Bausch & Lomb, Carl Zeiss. Employment/honoraria/consulting fees; Name of Commercial Company(s); Glaukos, Ivantis, Transcend, Allergan, Neomedix.
Abstract Body:
Purpose: To evaluate the effective lens position (ELP) and refractive outcomes for anterior chamber intraocular lenses (ACIOL), posterior chamber IOLs (PCIOL) in-the-bag, in the sulcus, in the sulcus with optic capture (OC), in the bag with reverse optic capture (ROC), and scleral sutured lenses (SS).
Study Design: Single-centre, retrospective, investigational cohort study.
Methods: 213 eyes, 194 patients that underwent cataract from Jan. 2005 to Oct. 2017. 51 eyes had ACIOLs, 61 eyes with in-the-bag, 30 eyes with sulcus, 43 eyes with OC, 19 eyes with ROC, and 9 eyes with SS PCIOLs . The primary outcome was ELP (measured by anterior-segment OCT from the anterior corneal vertex to the anterior surface of the IOL) and the secondary outcome was mean arithmetic error (MArE); measured as the difference between post-operative refraction and pre-operative targeted refraction for in-the-bag placement (with the exception of the ACIOL group). ELP and MArE were reported as mean, in millimeters (mm) and diopters (D) ± standard deviation, respectively.
Results: In the following groups, ELP was determined to be: 3.41±0.45 mm in the ACIOL group, 4.44±0.31 mm for in-the-bag, 4.31±0.37 mm in sulcus, 4.54±0.41 mm in OC, 4.16±0.37 mm in ROC, and 3.92±0.67 mm in SS. The MArE of each group was determined to be: -0.38±0.69 D for ACIOL, -0.28±0.76 D for in-the-bag, -0.84±1.00 D in sulcus, -0.30±0.97 D in OC, -0.67±0.77 D in ROC, and -0.73±1.10 D in SS.
Conclusions: This study suggests that there can be variability in post-operative refractive outcomes in complex IOL fixation strategies. This variability should be taken into account pre-operatively when calculating the lens power to ensure optimized visual outcomes.
Author Disclosure Block: Y. Patodia: None. J. Yohannan: None. A. Shahidi: None. A. Kaplan: None. I. Ahmed: Grant/research support; Name of Commercial Company(s); Alcon, Abbott Medical Optics, Bausch & Lomb, Carl Zeiss. Employment/honoraria/consulting fees; Name of Commercial Company(s); Glaukos, Ivantis, Transcend, Allergan, Neomedix.
Abstract Body:
Purpose: To evaluate the effective lens position (ELP) and refractive outcomes for anterior chamber intraocular lenses (ACIOL), posterior chamber IOLs (PCIOL) in-the-bag, in the sulcus, in the sulcus with optic capture (OC), in the bag with reverse optic capture (ROC), and scleral sutured lenses (SS).
Study Design: Single-centre, retrospective, investigational cohort study.
Methods: 213 eyes, 194 patients that underwent cataract from Jan. 2005 to Oct. 2017. 51 eyes had ACIOLs, 61 eyes with in-the-bag, 30 eyes with sulcus, 43 eyes with OC, 19 eyes with ROC, and 9 eyes with SS PCIOLs . The primary outcome was ELP (measured by anterior-segment OCT from the anterior corneal vertex to the anterior surface of the IOL) and the secondary outcome was mean arithmetic error (MArE); measured as the difference between post-operative refraction and pre-operative targeted refraction for in-the-bag placement (with the exception of the ACIOL group). ELP and MArE were reported as mean, in millimeters (mm) and diopters (D) ± standard deviation, respectively.
Results: In the following groups, ELP was determined to be: 3.41±0.45 mm in the ACIOL group, 4.44±0.31 mm for in-the-bag, 4.31±0.37 mm in sulcus, 4.54±0.41 mm in OC, 4.16±0.37 mm in ROC, and 3.92±0.67 mm in SS. The MArE of each group was determined to be: -0.38±0.69 D for ACIOL, -0.28±0.76 D for in-the-bag, -0.84±1.00 D in sulcus, -0.30±0.97 D in OC, -0.67±0.77 D in ROC, and -0.73±1.10 D in SS.
Conclusions: This study suggests that there can be variability in post-operative refractive outcomes in complex IOL fixation strategies. This variability should be taken into account pre-operatively when calculating the lens power to ensure optimized visual outcomes.
