Dhoop Chhaon - 1977

Story

Concerned about the outbreak of plague in a distant rural village in India, Dr. D.D. Sinha asks a number of prominent doctors to go there and treat the ailing and prevent the disease from spreading. No one except his prot?g?, Dr. Paras, is prepared to go there. Dr. Paras travels there, works with the villagers to prevent the disease and treats the ailing, and is successful in preventing it?s spreading to other communities.

He meets with village belle, Lajwanti alias Lajjo, and both fall in love with each other. Paras promises to return back and marry her. Lajjo awaits his return, but he does not return, the villagers taunt her, beat her senseless, she loses her eyesight, is abducted and sold into prostitution. Then one day she gets an unexpected patron, none other Dr. Paras, who is now engaged to Dr. Sinha?s daughter, neurologist Manju, and would like to assist Lajjo is getting her sight back (IMDB)