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Clinical Outcomes and Lens Constant Optimization of the Zeiss CT Lucia 602 Lens Using a Modified Yamane Technique

PURPOSE: To report the clinical and refractive outcomes of a modified Yamane technique for scleral fixation of the CT Lucia 602 lens. DESIGN: Retrospective case series. PATIENTS: One hundred twenty-one eyes with dislocated posterior chamber lens implants, surgical aphakia, subluxed crystalline lense...

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Autores principales: Randerson, Edward L, Bogaard, Joseph D, Koenig, Lisa R, Hwang, Eileen S, Warren, Clinton C, Koenig, Steven B
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Dove 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7680091/
https://www.ncbi.nlm.nih.gov/pubmed/33235431
http://dx.doi.org/10.2147/OPTH.S281505
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author Randerson, Edward L
Bogaard, Joseph D
Koenig, Lisa R
Hwang, Eileen S
Warren, Clinton C
Koenig, Steven B
author_facet Randerson, Edward L
Bogaard, Joseph D
Koenig, Lisa R
Hwang, Eileen S
Warren, Clinton C
Koenig, Steven B
author_sort Randerson, Edward L
collection PubMed
description PURPOSE: To report the clinical and refractive outcomes of a modified Yamane technique for scleral fixation of the CT Lucia 602 lens. DESIGN: Retrospective case series. PATIENTS: One hundred twenty-one eyes with dislocated posterior chamber lens implants, surgical aphakia, subluxed crystalline lenses, capsular tear, anterior chamber, or iris sutured posterior chamber lens intolerance were included. METHODS: Secondary implantation of the Zeiss CT Lucia 602 lens was performed by a single surgeon using a modified Yamane technique employing a single needle, rather than the double-needle approach. One hundred twelve eyes underwent simultaneous 3 port pars plana vitrectomy and 9 eyes had previously undergone posterior vitrectomy surgery. Exclusion criteria were age <18, simultaneous glaucoma or corneal procedures, staged corneal transplantation, and follow-up <30 days. MAIN OUTCOME MEASURES: A paired t-test was used to compare pre- and post-operative corrected distance visual acuity (CDVA), the mean predictive error, and the mean absolute predictive error between the manufacturer’s and optimized constants for Hoffer Q, Holladay I, and SRK/T. Complication rates were reported. RESULTS: One hundred twenty-one consecutive eyes with a mean follow-up of 237 days were included. The pre-operative CDVA was 0.871 ± 0.785 logMAR (mean ± standard deviation, Snellen equivalent 20/149), which improved to 0.401 ± 0.608 (Snellen equivalent 20/50) post-operatively. In 109 eyes with reliable postoperative refractions, the mean predictive refractive error (D) ± std was +0.74 ± 1.37 for Hoffer Q, +0.66 ± 1.41 for Holladay 1, and +0.47 ± 1.49 for SRK/T (p<0.05). Refractive outcome analysis yielded a mean optimized personalized anterior chamber depth (pACD) of 5.69, Surgeon Factor of 1.79, and A constant of 118.56. Vision-limiting complications occurred in 11 eyes (9.1%). CONCLUSION: Scleral fixation of the CT Lucia 602 lens using a single-needle modification of the Yamane technique resulted in very good visual acuity, predictable postoperative refractive errors, but some vision-limiting complications in this heterogeneous group of eyes with significant comorbidities.
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spelling pubmed-76800912020-11-23 Clinical Outcomes and Lens Constant Optimization of the Zeiss CT Lucia 602 Lens Using a Modified Yamane Technique Randerson, Edward L Bogaard, Joseph D Koenig, Lisa R Hwang, Eileen S Warren, Clinton C Koenig, Steven B Clin Ophthalmol Original Research PURPOSE: To report the clinical and refractive outcomes of a modified Yamane technique for scleral fixation of the CT Lucia 602 lens. DESIGN: Retrospective case series. PATIENTS: One hundred twenty-one eyes with dislocated posterior chamber lens implants, surgical aphakia, subluxed crystalline lenses, capsular tear, anterior chamber, or iris sutured posterior chamber lens intolerance were included. METHODS: Secondary implantation of the Zeiss CT Lucia 602 lens was performed by a single surgeon using a modified Yamane technique employing a single needle, rather than the double-needle approach. One hundred twelve eyes underwent simultaneous 3 port pars plana vitrectomy and 9 eyes had previously undergone posterior vitrectomy surgery. Exclusion criteria were age <18, simultaneous glaucoma or corneal procedures, staged corneal transplantation, and follow-up <30 days. MAIN OUTCOME MEASURES: A paired t-test was used to compare pre- and post-operative corrected distance visual acuity (CDVA), the mean predictive error, and the mean absolute predictive error between the manufacturer’s and optimized constants for Hoffer Q, Holladay I, and SRK/T. Complication rates were reported. RESULTS: One hundred twenty-one consecutive eyes with a mean follow-up of 237 days were included. The pre-operative CDVA was 0.871 ± 0.785 logMAR (mean ± standard deviation, Snellen equivalent 20/149), which improved to 0.401 ± 0.608 (Snellen equivalent 20/50) post-operatively. In 109 eyes with reliable postoperative refractions, the mean predictive refractive error (D) ± std was +0.74 ± 1.37 for Hoffer Q, +0.66 ± 1.41 for Holladay 1, and +0.47 ± 1.49 for SRK/T (p<0.05). Refractive outcome analysis yielded a mean optimized personalized anterior chamber depth (pACD) of 5.69, Surgeon Factor of 1.79, and A constant of 118.56. Vision-limiting complications occurred in 11 eyes (9.1%). CONCLUSION: Scleral fixation of the CT Lucia 602 lens using a single-needle modification of the Yamane technique resulted in very good visual acuity, predictable postoperative refractive errors, but some vision-limiting complications in this heterogeneous group of eyes with significant comorbidities. Dove 2020-11-17 /pmc/articles/PMC7680091/ /pubmed/33235431 http://dx.doi.org/10.2147/OPTH.S281505 Text en © 2020 Randerson et al. http://creativecommons.org/licenses/by-nc/3.0/ This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License (http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms (https://www.dovepress.com/terms.php).
spellingShingle Original Research
Randerson, Edward L
Bogaard, Joseph D
Koenig, Lisa R
Hwang, Eileen S
Warren, Clinton C
Koenig, Steven B
Clinical Outcomes and Lens Constant Optimization of the Zeiss CT Lucia 602 Lens Using a Modified Yamane Technique
title Clinical Outcomes and Lens Constant Optimization of the Zeiss CT Lucia 602 Lens Using a Modified Yamane Technique
title_full Clinical Outcomes and Lens Constant Optimization of the Zeiss CT Lucia 602 Lens Using a Modified Yamane Technique
title_fullStr Clinical Outcomes and Lens Constant Optimization of the Zeiss CT Lucia 602 Lens Using a Modified Yamane Technique
title_full_unstemmed Clinical Outcomes and Lens Constant Optimization of the Zeiss CT Lucia 602 Lens Using a Modified Yamane Technique
title_short Clinical Outcomes and Lens Constant Optimization of the Zeiss CT Lucia 602 Lens Using a Modified Yamane Technique
title_sort clinical outcomes and lens constant optimization of the zeiss ct lucia 602 lens using a modified yamane technique
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7680091/
https://www.ncbi.nlm.nih.gov/pubmed/33235431
http://dx.doi.org/10.2147/OPTH.S281505
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