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Transcorneal Electrical Stimulation - Multicenter Safety Study

This study has been completed.
Information provided by (Responsible Party):
Okuvision GmbH Identifier:
First received: April 15, 2013
Last updated: September 7, 2015
Last verified: September 2015
The purpose of this study is to determine the long term effects of transcorneal electrostimulation (TES) in patients with retinitis pigmentosa (RP). In a prior study (NCT00804102) the results of short term stimulation pointed to a positive effect on the visual field and other parameters. In this study, the patients will be stimulated with the OkuStim device for half a year and safety parameters will be measured.

Condition Intervention
Retinitis Pigmentosa
Device: Electrostimulation

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Transcorneal Electrical Stimulation for the Treatment of Retinitis Pigmentosa - a Multicenter Safety Study of the Okustim ® System

Resource links provided by NLM:

Further study details as provided by Okuvision GmbH:

Primary Outcome Measures:
  • ophthalmic examinations [ Time Frame: 6 months ]
    visual acuity slit lamp microscopy for examination of the anterior and posterior segment intraocular pressure measurement visual field examination Optical coherence tomography (OCT) Digital colour fundus photography

Secondary Outcome Measures:
  • Questionnaires [ Time Frame: 6 months ]
    Questionnaires to collect the patient's perceived benefits of treatment and handling of the device

Enrollment: 105
Study Start Date: September 2012
Study Completion Date: August 2015
Primary Completion Date: July 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: OkuStim
Electrostimulation Standard Treatment with OkuStim
Device: Electrostimulation
Other Name: OkuStim


Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • patients with retinitis pigmentosa (rod-cone dystrophy) after prescription of electrical stimulation by an ophthalmologist
  • adult patients who are capable of giving consent,
  • Visual acuity ≥ 0.02
  • because the electrode is to be positioned on the eye at home, the patient or his family members should have sufficient fine motor skills (assessment by the study physician)
  • the patient must be capable of giving consent and a medical assessment that he/she is able to participate in the whole study according to the protocol

Exclusion Criteria:

  • diabetic retinopathy
  • neovascularisation of any origin
  • after arterial or venous occlusion
  • after retinal detachment
  • silicone oil tamponade
  • dry or exudative age-related macular degeneration
  • macular edema
  • all forms of glaucoma
  • any form of corneal degeneration that reduces visual acuity
  • systemic diseases that are difficult to control or manage, that could endanger the normal study schedule
  • patients in a permanently poor general condition, which could hinder the regular attendance at control examinations in the clinic
  • forms of mental illness related to the bipolar affective and schizoid-affective disorders, and all forms of dementia
  • simultaneous participation in another interventional study or history of interventions whose effect may still persist
  Contacts and Locations
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Please refer to this study by its identifier: NCT01835002

Glostrup Hospital and Kennedy Center
Glostrup, Denmark
University Eye Clinic Bonn
Bonn, Germany, 53127
Augenzentrum München
Munich, Germany
University Eye Clinic Regensburg
Regensburg, Germany, 93053
Zentrum für seltene Netzhauterkrankungen, AugenZentrum Siegburg
Siegburg, Germany, 53721
Centre for Ophthalmology at the eye clinic Tübingen
Tübingen, Germany, 72076
Oslo University Hospital
Oslo, Norway
Sponsors and Collaborators
Okuvision GmbH
Principal Investigator: Florian Gekeler, Prof Dr med Eberhard-Karls-Universität Tübingen
  More Information

Responsible Party: Okuvision GmbH Identifier: NCT01835002     History of Changes
Other Study ID Numbers: TESOLA
Study First Received: April 15, 2013
Last Updated: September 7, 2015

Keywords provided by Okuvision GmbH:
transcorneal electrostimulation

Additional relevant MeSH terms:
Retinitis Pigmentosa
Retinal Diseases
Eye Diseases
Eye Diseases, Hereditary
Retinal Dystrophies
Retinal Degeneration
Genetic Diseases, Inborn processed this record on April 25, 2017