H.G. Wells 
Country of the Blind [EPUB ebook] 

"Over the mountains I come, " said Nunez, "out of the country beyond there-where men can see. From near Bogota, where there are a hundred thousands of people, and where the city passes out of sight."One of the acknowledged masters of speculative fiction, H.G. Wells conducts in this short story a disconcerting thought experiment. What would become of a community if its members were somehow deprived of sight? How would society evolve in the absence of the very concept of visibility? And what if, one day, a sighted outsider suddenly found himself in this country of the blind?