Jamie Soar, a legally blind man from England, suffers from Retinitis Pigmentosa, a group of genetic disorders that involves the breakdown and loss of cells in the retina, affecting its ability to respond to light. According to UploadVR, in Soar's case, the hereditary eye disorder makes him quite nearsighted and it's impossible for him to see at night or in dark places — he would need to use a cane for navigation.
The HTC Vive head mount uses two screens, one for each eye. Each of them runs natively on a 1200 x 1080 resolution and has a 90 Hz refresh rate. This setup worked perfectly for Soar and counteracted his visual impairment. In fact, using the Vive, Soar can perceive the virtual world as clearly as those with normal vision. It was a life-altering event for him.
Soar notes that he has tried other VR headsets but so far, only the HTC Vive delivered an optimal experience for him.
See the full story here: http://www.techtimes.com/articles/180356/20161003/beyond-virtual-reality-htc-vive-vr-headset-helps-a-legally-blind-man-see-clearly-for-the-first-time.htm