Kuldeep Singh had lost vision while hurling a bomb out of a DTC bus during the Oct 29 New Delhi blasts in 2005. Kuldeep Singh, the Delhi Transport Corporation (DTC) bus driver, who had lost his eye sight while throwing a bomb out of the bus about a year ago, has partially regained his vision. The miracle was made possible by a new technique of treatment involving the use of stem cells, developed by a doctor at the Hyderabad based LV Prasad Eye Institute.