Kathmandu, April 22 -- Sudarshan Dhakal crouches next to a motorcycle, carefully runs his fingers over its engine, finds the faulty part and removes it.

He gets a spare part and replaces the component. He tests the engine, which roars into life emitting blue smoke from the silencer.

Sudarshan, 54, owns and runs Dhakal Motorcycle Workshop with his wife Kamala Aryal. It is like thousands of other repair shops along the highway. What makes this one different is that Sudarshan cannot see.

It was 1996 when Sudarshan was in a group ferrying brand new Honda motorcycles from the warehouse in Hetauda to the Dharan showroom. Near the Kosi Barrage, the car in front of him braked abruptly.

The last thing Sudarshan ever saw was the car's red brak...