But a survey by the AMD Alliance, an umbrella group of eye charities, found that even patients who live near hospitals that offer PDT are going blind because they are waiting too long for treatment.

BBC: NHS delays 'causing blindness'

Argus II is intended to provide electrical stimulation of the retina to induce visual perception in blind individuals with retinitis pigmentosa and has the capacity to offer life-changing visual capabilities to those currently unable to see anything except, at best, extremely bright lights.

ENGADGET: FDA clears Argus II 'bionic eye' for sale in the US (video)

It is essential that the global discussion in Rio not be blind to the potential solutions that access to voluntary family planning could offer to many of the world's problems.

CNN: The elephant in the room at Rio summit