#$%^&*AU2012201442A120120405.pdf#####RETINAL PROSTHESIS WITH SEPARATE CENTRAL ELECTRODE ARRAY AND PERIPHERAL ELECTRODE ARRAY ABSTRACT The artificial percept of light may be created by electrically stimulating the neurons of the retina. An array external to the retina provides easier implantation and improved manufacturability. It is advantageous to supply a high-resolution electrode array (10) internal to the sclera, near the fovea and a lower-resolution electrode array (30) external to the sclera near the periphery of the retina. The preferred method of manufacturing a high-resolution electrode array (10) is through photolithography. A small high-resolution array (10) can be implanted near the fovea. Due to its small size, curvature is less of an issue. A larger lower-resolution array (30) can be moulded in silicone or similar method and placed around the periphery of the retina, where the retina is naturally lower resolution. Further, the lower-resolution array (30) can be implanted external to the sclera reducing the number of electrical connectors passing through the sclera.
