Sliders (1995)

S4E19 My Brother's Keeper

The Sliders find themselves on a planet where clones are created to provide spare organs. When Quinn's clone suffers blindness due to a lab mishap, Quinn steps in to assist but is mistaken for the clone himself. Meanwhile, the rest of the group unintentionally saves the clone, prompting Colin to impart lessons about the value of family and the meaning of sacrifice.