Blindness due to retina diseases affects over 200 million people globally, and that number is expected to reach 290 million by 2040. The two most common retina degenerative diseases are called Retinitis Pigmentosa and Age-related Macular Degeneration (AMD). Retinitis Pigmentosa affects one and a half million people globally. It starts with peripheral vision that goes dark, until the person is completely blind. AMD affects in the US alone 30 million people over 55, including 10 million in the blinding stage. AMD starts with central vision that goes dark, until the person is totally blind.






