Patients often ask what technology is being developed to create an bionic eye to recreate vision. There have been some successes in directly connecting to the neurons in the brain that provide vision, in the occipital lobe. Check out this article that is a study being done in Australia that may shed some light on this topic!
A link to the actual study and description of how they hope to connect to the brain is here, Monash Vision Bionic Eye.
Another study being done with Retinitis Pigmentosa patients in the UK has had some promising results with electronic microchips. Read the story on the UK Telegraph.