Kyila, 29, has lived in darkness since she was born.

But she likes teaching her students, who are also blind, Tibetan songs. "We all have bright and beautiful eyes. I see the beautiful souls in the world, and you see the light in our hearts," reads a line from one.

Kyila says during the first 12 years of her life she was placed in a safe corner at home, "always waiting for my parents to dress or feed me".