The Better Half (1918)

Louise and Trixie Thorley are twins, one is kind-hearted and the other selfish. Although Louise loves Michael Thwaite, he is dazzled by the pampered Trixie and marries her. Trixie soon tires of Michael and departs for Europe with Hendrick Thurston, "an idler." The night she leaves him, Michael is attacked by thugs and loses his sight. To spare his feelings, Louise tends to him posing as Trixie. When Trixie returns, the twins argue, and Trixie kills herself in a fit of remorse. Michael finally regains his sight and, realizing Louise's love, marries her.