---
title: What is electronic retinal implant?
description: "An electronic retinal implant is a surgically implanted device that replaces some functions of damaged retinal cells using microelectronic circuits and electrodes. It is a specific type of retinal prosthesis. ## Device Components Implants usually include an electrode array on…"
url: "https://bluefinvision.com/knowledge-base/topics/treatments-procedures/what-is-electronic-retinal-implant/"
updated: "2025-12-12"
category: "Treatments & Procedures"
---

# What is electronic retinal implant?

An electronic retinal implant is a surgically implanted device that replaces some functions of damaged retinal cells using microelectronic circuits and electrodes. It is a specific type of retinal prosthesis.

## Device Components

Implants usually include an electrode array on or under the retina, a receiver coil, and external components such as a camera and processor worn on glasses. The processor transforms images into stimulation patterns sent wirelessly to the implant.

- Epiretinal arrays sit on the inner retinal surface; subretinal arrays lie beneath the retina
- Power and data are transmitted transcutaneously from external coils
- Stimulation parameters can be adjusted to optimise perceived images
- Regular programming sessions fine‑tune performance after surgery

## Clinical Use

Electronic retinal implants remain limited to selected patients in specialised centres or trials. Long‑term studies monitor visual function, device stability, and ocular health.

- Potential complications include infection, retinal detachment, or device failure
- Explants or replacements may be required if problems arise
- Rehabilitation professionals teach patients to interpret the artificial vision
- Research continues to improve resolution and reduce hardware burden