Safety and Efficacy of Subretinal Implants for Partial Restoration of Vision in Blind Patients
NCT ID: NCT01024803
Last Updated: 2018-09-05
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
COMPLETED
NA
39 participants
INTERVENTIONAL
2009-12-31
2018-04-30
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
Subretinal implant "ON" results in significant visual acuity improvement, when compared to "OFF" condition.
Related Clinical Trials
Explore similar clinical trials based on study characteristics and research focus.
Safety & Efficacy of Subretinal Implants for Partial Restoration of Vision in Blind Patients
NCT01497379
Safety and Efficacy of the Alpha AMS Subretinal Implant
NCT02720640
Retina Implant Pilot Trial to Evaluate Safety & Efficacy in Blind Patients Having Degenerated Photo-receptors
NCT00515814
Adaptive Optics Retinal Imaging
NCT02317328
Impact on Daily Life of Patients Using the Subretinal Implant RETINA IMPLANT Alpha AMS
NCT03561922
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
RANDOMIZED
SINGLE_GROUP
TREATMENT
SINGLE
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
Device name: "Retina Implant model Alpha". Surgical implantation of medical device into eye
Surgical implantation of medical device named "Retina Implant" into eye to restore vision partially.
Randomized intra-individual implant activation in patient under test conditions such as: FrACT, BaLM, BaGA, maze, ADL.
Other Intervention Names
Discover alternative or legacy names that may be used to describe the listed interventions across different sources.
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
* Pseudophakia
* Angiography shows retinal vessels adequately perfused, despite pathological RP condition.
* Age between 18 and 78 years.
* Blindness (at least monocular) i.e. visual functions not appropriate for localization of objects, self sustained navigation and orientation.
* Ability to read normal print in earlier life, optically corrected without magnifying glass.
* Willing and able to give written informed consent in accordance to EN ISO 14155 (section 6.7) and local legislation prior to participation in the study. Able to perform the study during the full time period of one year for Module-2.
Exclusion Criteria
* Optical Coherence Tomography (OCT) shows significant retina edema \&/or scar tissue within target region for implant.
* Retina detected as too thin to expect required rest-functionality of inner retina as shown via Optical Coherence Tomography (OCT).
* Lack of inner-retinal function, as determined by Electrically Evoked Phosphenes (EEP).
* Heavy clumped pigmentation at posterior pole
* Any other ophthalmologic disease with relevant effect upon visual function (e.g. glaucoma, optic neuropathies, trauma, diabetic retinopathy, retinal detachment).
* Amblyopia reported earlier in life on eye to be implanted
* Systemic diseases that might imply considerable risks with regard to the surgical interventions and anaesthesia (e.g. cardiovascular/ pulmonary diseases, severe metabolic diseases).
* Neurological and/or psychiatric diseases (e.g. M. Parkinson, epilepsy, depression).
* Hyperthyroidism or hypersensitivity to iodine
* Women who are pregnant or nursing, or women of childbearing potential who are not willing to use a medically acceptable means of birth control for the duration of the study, or women unwilling to perform a pregnancy test before entering the study.
* Participation in another interventional clinical trial within the past 30 days.
18 Years
78 Years
ALL
No
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
Retina Implant AG
INDUSTRY
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Eberhart Zrenner, Prof. MD
Role: STUDY_CHAIR
Centre for Ophthalmology, Institute for Ophthalmic Research, University of Tuebingen, Germany
Karl-Ulrich Bartz-Schmidt, Prof. MD
Role: PRINCIPAL_INVESTIGATOR
University Eye Hospital Tuebingen, Germany
Timothy L Jackson, PhD FRCOphth
Role: PRINCIPAL_INVESTIGATOR
King's College Hospital NHS Trust
János Németh, Prof. MD PhD
Role: PRINCIPAL_INVESTIGATOR
Department of Ophthalmology Semmelweis University Budapest
Robert E MacLaren, Prof. DPhil
Role: PRINCIPAL_INVESTIGATOR
Department of Ophthalmology, John Radcliffe Hospital, Oxford, UK
Johann Roider, Prof. MD
Role: PRINCIPAL_INVESTIGATOR
University Eye Hospital, Kiel, Germany
Helmut Sachs, PD, MD
Role: PRINCIPAL_INVESTIGATOR
Eye Hospital Dresden-Friedrichstadt, Germany
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
Helmut Sachs, MD, PD
Dresden, , Germany
Johann Roider, MD, Prof.
Kiel, , Germany
Karl-Ulrich Bartz-Schmidt, MD, Prof.
Tübingen, , Germany
Miklos Resch, MD, PhD
Budapest, , Hungary
Timothy L Jackson, MB.ChB, PhD, FRCOphth
London, , United Kingdom
Robert MacLaren, MD, Prof., DPhil DipEd FRCOphth FRCS
Oxford, , United Kingdom
Countries
Review the countries where the study has at least one active or historical site.
References
Explore related publications, articles, or registry entries linked to this study.
Koitschev A, Stingl K, Bartz-Schmidt KU, Braun A, Gekeler F, Greppmaier U, Sachs H, Peters T, Wilhelm B, Zrenner E, Besch D. Extraocular Surgical Approach for Placement of Subretinal Implants in Blind Patients: Lessons from Cochlear-Implants. J Ophthalmol. 2015;2015:842518. doi: 10.1155/2015/842518. Epub 2015 Dec 10.
Hafed ZM, Stingl K, Bartz-Schmidt KU, Gekeler F, Zrenner E. Oculomotor behavior of blind patients seeing with a subretinal visual implant. Vision Res. 2016 Jan;118:119-31. doi: 10.1016/j.visres.2015.04.006. Epub 2015 Apr 20.
Stingl K, Gekeler F, Bartz-Schmidt KU, Kogel A, Zrenner E, Gelisken F. Fluorescein angiographic findings in eyes of patients with a subretinal electronic implant. Curr Eye Res. 2013 May;38(5):588-96. doi: 10.3109/02713683.2013.767349. Epub 2013 Feb 14.
Stingl K, Bartz-Schmidt KU, Besch D, Braun A, Bruckmann A, Gekeler F, Greppmaier U, Hipp S, Hortdorfer G, Kernstock C, Koitschev A, Kusnyerik A, Sachs H, Schatz A, Stingl KT, Peters T, Wilhelm B, Zrenner E. Artificial vision with wirelessly powered subretinal electronic implant alpha-IMS. Proc Biol Sci. 2013 Feb 20;280(1757):20130077. doi: 10.1098/rspb.2013.0077. Print 2013 Apr 22.
Stingl K, Bartz-Schmidt KU, Besch D, Chee CK, Cottriall CL, Gekeler F, Groppe M, Jackson TL, MacLaren RE, Koitschev A, Kusnyerik A, Neffendorf J, Nemeth J, Naeem MA, Peters T, Ramsden JD, Sachs H, Simpson A, Singh MS, Wilhelm B, Wong D, Zrenner E. Subretinal Visual Implant Alpha IMS--Clinical trial interim report. Vision Res. 2015 Jun;111(Pt B):149-60. doi: 10.1016/j.visres.2015.03.001. Epub 2015 Mar 23.
Kitiratschky VB, Stingl K, Wilhelm B, Peters T, Besch D, Sachs H, Gekeler F, Bartz-Schmidt KU, Zrenner E. Safety evaluation of "retina implant alpha IMS"--a prospective clinical trial. Graefes Arch Clin Exp Ophthalmol. 2015 Mar;253(3):381-7. doi: 10.1007/s00417-014-2797-x. Epub 2014 Sep 16.
Stingl K, Bartz-Schmidt KU, Gekeler F, Kusnyerik A, Sachs H, Zrenner E. Functional outcome in subretinal electronic implants depends on foveal eccentricity. Invest Ophthalmol Vis Sci. 2013 Nov 19;54(12):7658-65. doi: 10.1167/iovs.13-12835.
Stingl K, Schippert R, Bartz-Schmidt KU, Besch D, Cottriall CL, Edwards TL, Gekeler F, Greppmaier U, Kiel K, Koitschev A, Kuhlewein L, MacLaren RE, Ramsden JD, Roider J, Rothermel A, Sachs H, Schroder GS, Tode J, Troelenberg N, Zrenner E. Interim Results of a Multicenter Trial with the New Electronic Subretinal Implant Alpha AMS in 15 Patients Blind from Inherited Retinal Degenerations. Front Neurosci. 2017 Aug 23;11:445. doi: 10.3389/fnins.2017.00445. eCollection 2017.
Cehajic Kapetanovic J, Troelenberg N, Edwards TL, Xue K, Ramsden JD, Stett A, Zrenner E, MacLaren RE. Highest reported visual acuity after electronic retinal implantation. Acta Ophthalmol. 2020 Nov;98(7):736-740. doi: 10.1111/aos.14443. Epub 2020 Apr 28.
Kuehlewein L, Troelenberg N, Stingl K, Schleehauf S, Kusnyerik A, Jackson TL, MacLaren RE, Chee C, Roider J, Wilhelm B, Gekeler F, Bartz-Schmidt KU, Zrenner E, Stingl K. Changes in microchip position after implantation of a subretinal vision prosthesis in humans. Acta Ophthalmol. 2019 Sep;97(6):e871-e876. doi: 10.1111/aos.14077. Epub 2019 Feb 28.
Rock T, Bartz-Schmidt KU, Bramkamp M, Rock D. Influence of axial length on thickness measurements using spectral-domain optical coherence tomography. Invest Ophthalmol Vis Sci. 2014 Oct 8;55(11):7494-8. doi: 10.1167/iovs.14-14043.
Kusnyerik A, Greppmaier U, Wilke R, Gekeler F, Wilhelm B, Sachs HG, Bartz-Schmidt KU, Klose U, Stingl K, Resch MD, Hekmat A, Bruckmann A, Karacs K, Nemeth J, Suveges I, Zrenner E. Positioning of electronic subretinal implants in blind retinitis pigmentosa patients through multimodal assessment of retinal structures. Invest Ophthalmol Vis Sci. 2012 Jun 20;53(7):3748-55. doi: 10.1167/iovs.11-9409.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
RI-MC-CT-2009
Identifier Type: -
Identifier Source: org_study_id
More Related Trials
Additional clinical trials that may be relevant based on similarity analysis.