[Research progress of subretinal implant based on electronic stimulation]
Xing Wang1, Chenglin Peng, Ying Zhang
1Institute of Biomedical & Electronic Engineering, Chongqing University, Chongqing 400044, China. ceibawx@126.com
Summary
This study details a subretinal prosthesis, a MEMS-based microimplant stimulating the optic nerve. It covers design, fabrication of the microphotodiode array (MPDA), and challenges for retinal implants.
Area of Science:
- Biomedical Engineering
- Neuroscience
- Materials Science
Context:
- Restoring vision is a significant challenge.
- Retinal prostheses offer a potential solution for blindness.
- Subretinal implants are a type of retinal prosthesis.
Purpose:
- To describe the design and fabrication of a subretinal prosthesis.
- To detail the microphotodiode array (MPDA) component.
- To discuss the challenges and future outlook for subretinal implants.
Summary:
- A subretinal prosthesis, utilizing MEMS technology, is implanted in the subretinal space.
- It comprises an extraocular and intraocular part, with the latter containing a stimulation chip with a microphotodiode array (MPDA) and microelectrodes.
- The paper elaborates on the design concept, fabrication process, and dimensions of the MPDA.
Impact:
- Provides a detailed overview of subretinal microimplant technology.
- Highlights key fabrication steps and materials for MPDA.
- Identifies current challenges and future research directions in the field of retinal prostheses.
