Dharma Yuddam(1979)

Original title: தர்மயுத்தம்

Rajini's parents are killed by Thengai Srinivasan. He is adopted and brought up by a rich man. After many years Rajini finds out that Thengai Srinivasan has been stealing body parts, especially eyes. How Rajini takes revenge on him forms the crux of the story.