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Supraciliary contraction segments: A new method for the treatment of presbyopia

BACKGROUND AND OBJECTIVE: To evaluate the safety and effectiveness of supraciliary contraction segment implants (SCSIs) for the treatment of presbyopia. MATERIALS AND METHODS: This prospective, non-comparative study comprised 10 eyes from five phakic and emmetropic 50-year-old subjects. Preoperative...

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Autores principales: Tunc, Zeki, Helvacioglu, Firat, Ercalik, Yesim, Baikoff, George, Sencan, Sadik
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4005223/
https://www.ncbi.nlm.nih.gov/pubmed/23552349
http://dx.doi.org/10.4103/0301-4738.97554
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author Tunc, Zeki
Helvacioglu, Firat
Ercalik, Yesim
Baikoff, George
Sencan, Sadik
author_facet Tunc, Zeki
Helvacioglu, Firat
Ercalik, Yesim
Baikoff, George
Sencan, Sadik
author_sort Tunc, Zeki
collection PubMed
description BACKGROUND AND OBJECTIVE: To evaluate the safety and effectiveness of supraciliary contraction segment implants (SCSIs) for the treatment of presbyopia. MATERIALS AND METHODS: This prospective, non-comparative study comprised 10 eyes from five phakic and emmetropic 50-year-old subjects. Preoperative and postoperative near and distance visual acuity, topography, axial length, pachymetry, and intraocular pressure were analyzed. A 5.32-mm long and 0.85-mm thick piece of polymethyl methacrylat (PMMA) and a 5.32-mm long or 0.55-mm thick dried hydrophilic SCSI were placed within the scleral tunnels that were created 2 mm away from the limbus. The 500–550 μm deep tunnels were parallel to the limbus and four segments were implanted per eye. The SCSIs were entirely placed at a depth of approximately 85% in the sclera. RESULTS: The uncorrected distance visual acuity was similar before and after the surgery (0.00 logMAR). The monocular mean uncorrected near visual acuity (UNVA) was 0.5 ± 0.0 before surgery, 0.12 ± 0.10 logMAR at 1 month after surgery, 0.16 ± 0.18 logMAR at 3 months after surgery, and 0.29 ± 0.16 logMAR at the 18-month follow-up. CONCLUSION: Despite obtaining satisfactory results at 6 months after the surgery, a follow-up of the SCSI intervention at 18 months revealed a regression of the early post-op UNVA improvement caused by a progressive outward movement of SCSIs.
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spelling pubmed-40052232014-05-01 Supraciliary contraction segments: A new method for the treatment of presbyopia Tunc, Zeki Helvacioglu, Firat Ercalik, Yesim Baikoff, George Sencan, Sadik Indian J Ophthalmol Original Article BACKGROUND AND OBJECTIVE: To evaluate the safety and effectiveness of supraciliary contraction segment implants (SCSIs) for the treatment of presbyopia. MATERIALS AND METHODS: This prospective, non-comparative study comprised 10 eyes from five phakic and emmetropic 50-year-old subjects. Preoperative and postoperative near and distance visual acuity, topography, axial length, pachymetry, and intraocular pressure were analyzed. A 5.32-mm long and 0.85-mm thick piece of polymethyl methacrylat (PMMA) and a 5.32-mm long or 0.55-mm thick dried hydrophilic SCSI were placed within the scleral tunnels that were created 2 mm away from the limbus. The 500–550 μm deep tunnels were parallel to the limbus and four segments were implanted per eye. The SCSIs were entirely placed at a depth of approximately 85% in the sclera. RESULTS: The uncorrected distance visual acuity was similar before and after the surgery (0.00 logMAR). The monocular mean uncorrected near visual acuity (UNVA) was 0.5 ± 0.0 before surgery, 0.12 ± 0.10 logMAR at 1 month after surgery, 0.16 ± 0.18 logMAR at 3 months after surgery, and 0.29 ± 0.16 logMAR at the 18-month follow-up. CONCLUSION: Despite obtaining satisfactory results at 6 months after the surgery, a follow-up of the SCSI intervention at 18 months revealed a regression of the early post-op UNVA improvement caused by a progressive outward movement of SCSIs. Medknow Publications & Media Pvt Ltd 2014-02 /pmc/articles/PMC4005223/ /pubmed/23552349 http://dx.doi.org/10.4103/0301-4738.97554 Text en Copyright: © Indian Journal of Ophthalmology http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Tunc, Zeki
Helvacioglu, Firat
Ercalik, Yesim
Baikoff, George
Sencan, Sadik
Supraciliary contraction segments: A new method for the treatment of presbyopia
title Supraciliary contraction segments: A new method for the treatment of presbyopia
title_full Supraciliary contraction segments: A new method for the treatment of presbyopia
title_fullStr Supraciliary contraction segments: A new method for the treatment of presbyopia
title_full_unstemmed Supraciliary contraction segments: A new method for the treatment of presbyopia
title_short Supraciliary contraction segments: A new method for the treatment of presbyopia
title_sort supraciliary contraction segments: a new method for the treatment of presbyopia
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4005223/
https://www.ncbi.nlm.nih.gov/pubmed/23552349
http://dx.doi.org/10.4103/0301-4738.97554
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