ANATOMICAL CHANGES BETWEEN ARGUS II RETINAL PROSTHESIS AND INNER RETINAL LAYERS DETECTED BY SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY IN FIRST YEAR: A CASE REPORT. Issue Volume 15:Issues 4(2021) (July 2021)

• Record Type: Journal Article
• Authors: Patelli, Fabio; Colombo, Leonardo; Aly, Mohamed Omar M.; Rossetti, Luca
• Is Part Of: Retinal cases & brief reports. Volume 15:Issues 4(2021)
• Publication Date: 2021-07
• Subjects: Argus II -- epiretinal fibrosis -- epiretinal prosthesis -- retinal prosthesis -- retinitis pigmentosa; Retina -- Diseases -- Periodicals; Retina -- Periodicals; Retinal Diseases -- Periodicals; Retina -- Case Reports; Retinal Diseases -- Case Reports; 617.7
• DOI: 10.1097/ICB.0000000000000816
• Languages: English
• ISSNs: 1935-1089

Abstract

Abstract : Purpose: To report and describe the anatomical changes detected by spectral domain optical coherence tomography between an Argus II retinal prosthesis and the inner retinal layers during 1-year follow-up. Methods and Results: A patient presented with epiretinal fibrosis 12 months after implant of an Argus II epiretinal prosthesis. One month after uneventful surgery in March 2016, an evident hyporeflective space was detected between the epiretinal prosthesis and the inner retinal surface by spectral domain optical coherence tomography. An epiretinal hyperreflective band was noticed during follow-up and 1 year after surgery. Spectral domain optical coherence tomography showed close contact of the band with the array, which greatly increased the electrical threshold of stimulation for most of the electrodes. Some electrodes were no longer functioning. No changes in visual performance were detected. Conclusion: Argus II epiretinal prosthesis implant may be complicated by the formation of a hyperreflective epiretinal band, detectable by spectral domain optical coherence tomography. The band may alter prosthesis function; to date, the patient did not scored any decrease in visual function. Abstract : This case report describes the formation of thick epiretinal fibrosis in the 1st year after implantation of an Argus II retinal prosthesis in a retinitis pigmentosa patient.