Honeycomb-type retinal device using chemically derived iridium oxide biointerfaces

Long-term operational stability and high-efficiency neuron stimulation are key to the development of retinal prostheses. In this research, a device with chemically inert flexible substrate is introduced, which satisfies these requirements. We have developed honeycomb-type that has high-performance electrode for suprachoroidal transretinal stimulation. The structure, in conjunctional bioceramic substrates embedded large numbers stimulating electrodes, provides high-resolution electrical custom CMOS microchip precisely controls delivery electrodes initiate artificial vision, offering partial remedy ophthalmic diseases. chip design was optimized drastically reduce number input wirings. A based on iridium oxide fabricated using unique solution process called chemical bath deposition (CBD). device, equipped CBD-derived used evaluate electrodes’ device’s performances vitro.