A Second-Generation (44-Channel) Suprachoroidal Retinal Prosthesis: A Single-Arm Clinical Trial of Feasibility

To assess the feasibility of a second-generation (44-channel) suprachoroidal retinal prosthesis for provision of functional vision in recipients with end-stage retinitis pigmentosa (RP) over 2.7 years. Prospective, single-arm, unmasked interventional clinical trial. Four participants, with advanced...

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Published inOphthalmology science (Online) Vol. 5; no. 1; p. 100525
Main Authors Petoe, Matthew A., Abbott, Carla J., Titchener, Samuel A., Kolic, Maria, Kentler, William G., Nayagam, David A.X., Baglin, Elizabeth K., Kvansakul, Jessica, Barnes, Nick, Walker, Janine G., Karapanos, Lewis, McGuinness, Myra B., Ayton, Lauren N., Luu, Chi D., Allen, Penelope J., Blamey, Peter J., Briggs, Robert J., Burns, Owen, Epp, Stephanie B., Johnson, Dean, McDermott, Hugh J., McGowan, Ceara, Millard, Rodney E., Seligman, Peter M., Shepherd, Robert K., Shivdasani, Mohit N., Sinclair, Nicholas C., Thien, Patrick C., Villalobos, Joel, Williams, Chris E., Yeoh, Jonathan, Young, Kiera A.
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier Inc 01.01.2025
Elsevier
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Online AccessGet full text
ISSN2666-9145
2666-9145
DOI10.1016/j.xops.2024.100525

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Abstract To assess the feasibility of a second-generation (44-channel) suprachoroidal retinal prosthesis for provision of functional vision in recipients with end-stage retinitis pigmentosa (RP) over 2.7 years. Prospective, single-arm, unmasked interventional clinical trial. Four participants, with advanced RP and bare-light perception vision. The 44-channel suprachoroidal retinal prosthesis was implanted in the worse-seeing eye. Device stability, functionality, and adverse events were investigated at approximately 12-week intervals up to 140 weeks (2.7 years) postdevice activation. Serious adverse event (SAE) reporting, visual response outcomes, functional vision outcomes, and quality-of-life outcomes. All 4 participants (aged 39–66 years, 3 males) were successfully implanted in 2018, and there were no device-related SAEs over the duration of the study. A mild postoperative subretinal hemorrhage was detected in 2 recipients, which cleared spontaneously within 2 weeks. OCT confirmed device stability and position under the macula. Improvements in localization abilities were demonstrated for all 4 participants in screen-based, tabletop, and orientation and mobility tasks. In addition, 3 of 4 participants recorded improvements in motion discrimination and 2 of 4 participants recorded substantial improvements in spatial discrimination and identification of tabletop objects. Participants reported their unsupervised use of the device included exploring new environments, detecting people, and safely navigating around obstacles. A positive effect of the implant on participants’ daily lives in their local environments was confirmed by an orientation and mobility assessor and participant self-report. Emotional well-being was not impacted by device implantation or usage. The completed clinical study demonstrates that the suprachoroidal prosthesis raises no safety concerns and provides improvements in functional vision, activities of daily living, and observer-rated quality of life. Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
AbstractList Purpose: To assess the feasibility of a second-generation (44-channel) suprachoroidal retinal prosthesis for provision of functional vision in recipients with end-stage retinitis pigmentosa (RP) over 2.7 years. Design: Prospective, single-arm, unmasked interventional clinical trial. Participants: Four participants, with advanced RP and bare-light perception vision. Methods: The 44-channel suprachoroidal retinal prosthesis was implanted in the worse-seeing eye. Device stability, functionality, and adverse events were investigated at approximately 12-week intervals up to 140 weeks (2.7 years) postdevice activation. Main Outcome Measures: Serious adverse event (SAE) reporting, visual response outcomes, functional vision outcomes, and quality-of-life outcomes. Results: All 4 participants (aged 39–66 years, 3 males) were successfully implanted in 2018, and there were no device-related SAEs over the duration of the study. A mild postoperative subretinal hemorrhage was detected in 2 recipients, which cleared spontaneously within 2 weeks. OCT confirmed device stability and position under the macula. Improvements in localization abilities were demonstrated for all 4 participants in screen-based, tabletop, and orientation and mobility tasks. In addition, 3 of 4 participants recorded improvements in motion discrimination and 2 of 4 participants recorded substantial improvements in spatial discrimination and identification of tabletop objects. Participants reported their unsupervised use of the device included exploring new environments, detecting people, and safely navigating around obstacles. A positive effect of the implant on participants’ daily lives in their local environments was confirmed by an orientation and mobility assessor and participant self-report. Emotional well-being was not impacted by device implantation or usage. Conclusions: The completed clinical study demonstrates that the suprachoroidal prosthesis raises no safety concerns and provides improvements in functional vision, activities of daily living, and observer-rated quality of life. Financial Disclosure(s): Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
PurposeTo assess the feasibility of a second-generation (44-channel) suprachoroidal retinal prosthesis for provision of functional vision in recipients with end-stage retinitis pigmentosa (RP) over 2.7 years. DesignProspective, single-arm, unmasked interventional clinical trial. ParticipantsFour participants, with advanced RP and bare-light perception vision. MethodsThe 44-channel suprachoroidal retinal prosthesis was implanted in the worse-seeing eye. Device stability, functionality, and adverse events were investigated at approximately 12-week intervals up to 140 weeks (2.7 years) postdevice activation. Main Outcome MeasuresSerious adverse event (SAE) reporting, visual response outcomes, functional vision outcomes, and quality-of-life outcomes. ResultsAll 4 participants (aged 39–66 years, 3 males) were successfully implanted in 2018, and there were no device-related SAEs over the duration of the study. A mild postoperative subretinal hemorrhage was detected in 2 recipients, which cleared spontaneously within 2 weeks. OCT confirmed device stability and position under the macula. Improvements in localization abilities were demonstrated for all 4 participants in screen-based, tabletop, and orientation and mobility tasks. In addition, 3 of 4 participants recorded improvements in motion discrimination and 2 of 4 participants recorded substantial improvements in spatial discrimination and identification of tabletop objects. Participants reported their unsupervised use of the device included exploring new environments, detecting people, and safely navigating around obstacles. A positive effect of the implant on participants’ daily lives in their local environments was confirmed by an orientation and mobility assessor and participant self-report. Emotional well-being was not impacted by device implantation or usage. ConclusionsThe completed clinical study demonstrates that the suprachoroidal prosthesis raises no safety concerns and provides improvements in functional vision, activities of daily living, and observer-rated quality of life. Financial Disclosure(s)Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
To assess the feasibility of a second-generation (44-channel) suprachoroidal retinal prosthesis for provision of functional vision in recipients with end-stage retinitis pigmentosa (RP) over 2.7 years. Prospective, single-arm, unmasked interventional clinical trial. Four participants, with advanced RP and bare-light perception vision. The 44-channel suprachoroidal retinal prosthesis was implanted in the worse-seeing eye. Device stability, functionality, and adverse events were investigated at approximately 12-week intervals up to 140 weeks (2.7 years) postdevice activation. Serious adverse event (SAE) reporting, visual response outcomes, functional vision outcomes, and quality-of-life outcomes. All 4 participants (aged 39–66 years, 3 males) were successfully implanted in 2018, and there were no device-related SAEs over the duration of the study. A mild postoperative subretinal hemorrhage was detected in 2 recipients, which cleared spontaneously within 2 weeks. OCT confirmed device stability and position under the macula. Improvements in localization abilities were demonstrated for all 4 participants in screen-based, tabletop, and orientation and mobility tasks. In addition, 3 of 4 participants recorded improvements in motion discrimination and 2 of 4 participants recorded substantial improvements in spatial discrimination and identification of tabletop objects. Participants reported their unsupervised use of the device included exploring new environments, detecting people, and safely navigating around obstacles. A positive effect of the implant on participants’ daily lives in their local environments was confirmed by an orientation and mobility assessor and participant self-report. Emotional well-being was not impacted by device implantation or usage. The completed clinical study demonstrates that the suprachoroidal prosthesis raises no safety concerns and provides improvements in functional vision, activities of daily living, and observer-rated quality of life. Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
To assess the feasibility of a second-generation (44-channel) suprachoroidal retinal prosthesis for provision of functional vision in recipients with end-stage retinitis pigmentosa (RP) over 2.7 years.PurposeTo assess the feasibility of a second-generation (44-channel) suprachoroidal retinal prosthesis for provision of functional vision in recipients with end-stage retinitis pigmentosa (RP) over 2.7 years.Prospective, single-arm, unmasked interventional clinical trial.DesignProspective, single-arm, unmasked interventional clinical trial.Four participants, with advanced RP and bare-light perception vision.ParticipantsFour participants, with advanced RP and bare-light perception vision.The 44-channel suprachoroidal retinal prosthesis was implanted in the worse-seeing eye. Device stability, functionality, and adverse events were investigated at approximately 12-week intervals up to 140 weeks (2.7 years) postdevice activation.MethodsThe 44-channel suprachoroidal retinal prosthesis was implanted in the worse-seeing eye. Device stability, functionality, and adverse events were investigated at approximately 12-week intervals up to 140 weeks (2.7 years) postdevice activation.Serious adverse event (SAE) reporting, visual response outcomes, functional vision outcomes, and quality-of-life outcomes.Main Outcome MeasuresSerious adverse event (SAE) reporting, visual response outcomes, functional vision outcomes, and quality-of-life outcomes.All 4 participants (aged 39-66 years, 3 males) were successfully implanted in 2018, and there were no device-related SAEs over the duration of the study. A mild postoperative subretinal hemorrhage was detected in 2 recipients, which cleared spontaneously within 2 weeks. OCT confirmed device stability and position under the macula. Improvements in localization abilities were demonstrated for all 4 participants in screen-based, tabletop, and orientation and mobility tasks. In addition, 3 of 4 participants recorded improvements in motion discrimination and 2 of 4 participants recorded substantial improvements in spatial discrimination and identification of tabletop objects. Participants reported their unsupervised use of the device included exploring new environments, detecting people, and safely navigating around obstacles. A positive effect of the implant on participants' daily lives in their local environments was confirmed by an orientation and mobility assessor and participant self-report. Emotional well-being was not impacted by device implantation or usage.ResultsAll 4 participants (aged 39-66 years, 3 males) were successfully implanted in 2018, and there were no device-related SAEs over the duration of the study. A mild postoperative subretinal hemorrhage was detected in 2 recipients, which cleared spontaneously within 2 weeks. OCT confirmed device stability and position under the macula. Improvements in localization abilities were demonstrated for all 4 participants in screen-based, tabletop, and orientation and mobility tasks. In addition, 3 of 4 participants recorded improvements in motion discrimination and 2 of 4 participants recorded substantial improvements in spatial discrimination and identification of tabletop objects. Participants reported their unsupervised use of the device included exploring new environments, detecting people, and safely navigating around obstacles. A positive effect of the implant on participants' daily lives in their local environments was confirmed by an orientation and mobility assessor and participant self-report. Emotional well-being was not impacted by device implantation or usage.The completed clinical study demonstrates that the suprachoroidal prosthesis raises no safety concerns and provides improvements in functional vision, activities of daily living, and observer-rated quality of life.ConclusionsThe completed clinical study demonstrates that the suprachoroidal prosthesis raises no safety concerns and provides improvements in functional vision, activities of daily living, and observer-rated quality of life.Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.Financial DisclosuresProprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.
ArticleNumber 100525
Author Titchener, Samuel A.
Villalobos, Joel
Kvansakul, Jessica
Kentler, William G.
Walker, Janine G.
Allen, Penelope J.
McDermott, Hugh J.
Kolic, Maria
Young, Kiera A.
Barnes, Nick
Luu, Chi D.
Thien, Patrick C.
McGuinness, Myra B.
Blamey, Peter J.
Nayagam, David A.X.
Baglin, Elizabeth K.
McGowan, Ceara
Shivdasani, Mohit N.
Burns, Owen
Seligman, Peter M.
Abbott, Carla J.
Yeoh, Jonathan
Shepherd, Robert K.
Millard, Rodney E.
Johnson, Dean
Karapanos, Lewis
Sinclair, Nicholas C.
Ayton, Lauren N.
Petoe, Matthew A.
Briggs, Robert J.
Williams, Chris E.
Epp, Stephanie B.
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crossref_primary_10_1111_ceo_14502
crossref_primary_10_1167_tvst_13_12_28
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Sinclair, Nicholas C
Burns, Owen
Villalobos, Joel
Millard, Rodney E
Seligman, Peter M
Yeoh, Jonathan
Shepherd, Robert K
Briggs, Robert J
Johnson, Dean
Williams, Chris E
Young, Kiera A
Thien, Patrick C
Shivdasani, Mohit N
McDermott, Hugh J
Blamey, Peter J
McGowan, Ceara
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Copyright 2024 American Academy of Ophthalmology
American Academy of Ophthalmology
2024 by the American Academy of Ophthalmology.
2024 by the American Academy of Ophthalmology. 2024 American Academy of Ophthalmology
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Issue 1
Keywords COVID-19
Bionic eye
EWB
Activities of daily living
Retinitis pigmentosa
cpd
FLORA
SAE
IVI-VLV
Functional vision
RP
Suprachoroidal retinal prosthesis
impact of vision impairment–very low vision
emotional well-being
Functional Low-Vision Observer-Rated Assessment
coronavirus disease 2019
serious adverse event
cycles-per-degree
Language English
License This is an open access article under the CC BY-NC-ND license.
2024 by the American Academy of Ophthalmology.
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Snippet To assess the feasibility of a second-generation (44-channel) suprachoroidal retinal prosthesis for provision of functional vision in recipients with end-stage...
PurposeTo assess the feasibility of a second-generation (44-channel) suprachoroidal retinal prosthesis for provision of functional vision in recipients with...
Purpose: To assess the feasibility of a second-generation (44-channel) suprachoroidal retinal prosthesis for provision of functional vision in recipients with...
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SubjectTerms Activities of daily living
Bionic eye
Functional vision
Ophthalmology
Original
Retinitis pigmentosa
Suprachoroidal retinal prosthesis
Title A Second-Generation (44-Channel) Suprachoroidal Retinal Prosthesis: A Single-Arm Clinical Trial of Feasibility
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