Tapping his white cane, Vinod Kumar Sharma spends four hours a day running the gauntlet of crowded trains and New Delhi's congested, potholed and often pavement-less roads.
Sharma is one of an estimated 63 million visually impaired people in India, according to the World Health Organization. Of those, some eight million are completely blind -- around 20 percent of the global total.
Many Delhi roads lack pavements, forcing the 44-year-old father-of-three to walk on the roadside, probing his white cane in front as cars and trucks tear past just centimetres (inches) away.
