Hanna Faber1, Dorothea Besch1, Karl-Ulrich Bartz-Schmidt1, Hanna Eisenstein1, Johann Roider2, Helmut Sachs3, Florian Gekeler4, Eberhart Zrenner5,6, Katarina Stingl1,7. 1. University Eye Hospital, Center for Ophthalmology, Eberhard Karls University, Tuebingen, Germany. 2. Department of Ophthalmology, Christian-Albrechts-University of Kiel, University Medical Center, Kiel, Germany. 3. Städtisches Klinikum Dresden Friedrichstadt, Dresden, Germany. 4. Department of Ophthalmology, Klinikum Stuttgart, Stuttgart, Germany. 5. Institute for Ophthalmic Research, Center for Ophthalmology, Eberhard Karls University, Tuebingen, Germany. 6. Werner Reichardt Centre for Integrative Neuroscience, Eberhard Karls University Tuebingen, Tuebingen, Germany. 7. Center for Rare Eye Diseases, Eberhard Karls University, Tuebingen, Germany.
Abstract
PURPOSE: To evaluate the motility of the eye in patients with the RETINA IMPLANT Alpha AMS. METHODS: Eye motility was determined in eight gaze directions in ten blind retinitis pigmentosa patients, who had received the RETINA IMPLANT Alpha AMS, before implantation of the subretinal implant and at six time-points up to one year after. RESULTS: The analysis of eye motility showed a restriction in the upgaze and gaze to the temporal side directly after surgery in eight of the nine patients included. The degree of motility restriction decreased continuously with recovery during the observation time. One year after surgery, eye motility was still restricted in the majority of patients, especially in the upgaze to the temporal side at 20° (five of seven patients). CONCLUSION: Retinal implants with intraorbital parts (e.g. connecting cables) caused restriction in the temporal and superior viewing directions in the majority of patients. Although this restriction might be cosmetically visible, this limitation in eye motility has no effects on the monocular vision and the implant's efficacy for daily use.
PURPOSE: To evaluate the motility of the eye in patients with the RETINA IMPLANT Alpha AMS. METHODS: Eye motility was determined in eight gaze directions in ten blind retinitis pigmentosapatients, who had received the RETINA IMPLANT Alpha AMS, before implantation of the subretinal implant and at six time-points up to one year after. RESULTS: The analysis of eye motility showed a restriction in the upgaze and gaze to the temporal side directly after surgery in eight of the nine patients included. The degree of motility restriction decreased continuously with recovery during the observation time. One year after surgery, eye motility was still restricted in the majority of patients, especially in the upgaze to the temporal side at 20° (five of seven patients). CONCLUSION: Retinal implants with intraorbital parts (e.g. connecting cables) caused restriction in the temporal and superior viewing directions in the majority of patients. Although this restriction might be cosmetically visible, this limitation in eye motility has no effects on the monocular vision and the implant's efficacy for daily use.