Annular choroidal detachment one year after argus-II retinal prosthesis implantation

Author: Mohammadkarim Johari (Iran, Islamic Republic of)

Co-authors: Mohsen Farvardin, Mohammad Nami, Reza Farvardin

Purpose

to report annular choroidal detachment one year after Argus-II retinal prosthesis implantation.

Setting/Venue

A 63-year-old male patient who had a history of Argus-II retinal implantation surgery in his left eye a year ago, referred to the clinic complaining of two weeks left eye irritation, redness, and ocular pain.

Methods

Physical examination showed ,the intraocular pressure (IOP) was 5 mmHg (hypotonia) and his visual acuity when the system was on had no change compared to the previous examination. Rubeotic vessels were seen on iris especially around the papillary margin. The intraocular lens (IOL) was properly in place. Since the vitreous cavity was full of hemorrhage, retina and prosthesis examination was not feasible.

Results

Upon a technical check of the Argus-II functionality, all 60 electrodes were found to be functional with mildly increased thresholds as compared to the previous examination. B-scan sonography was requested revealing annular choroidal detachment which stopped posteriorly in the margin of a retinal prosthesis. Also, some areas on choroidal detachment were suspected for concurrent retinal detachment.

Conlusions

The present case report portrays the first annular spontaneous choroidal detachment after Argus-II retinal prosthesis in a case of advanced retinitis pigmentosa.

Financial Disclosure

Authors declared no conflict of interest subjected to this work and no funding support received in preparation of the present report