Complex sentence: Radbourn was seriously injured in a hunting accident soon after retirement, in which he lost an eye, spending most of his remaining years shut up in a back room of the saloon he owned, too ashamed to be seen after the injury.
Split into simpler sentences: Radbourn was seriously injured in a hunting accident soon after retirement. He lost an eye in the accident and spent most of the remaining years of his life shut in a backroom of the saloon he owned, too ashamed to be seen after the injury.