Matthew Poole and continuators on Exodus 21:26

26 And if a man smite the eye of his servant , or the eye of his maid, that it perish, he shall let them go free for his eyes sake.

Which some confine to the Israelitish servants, but the text doth not so limit it, and the reason of the law seems to reach to Gentile-servants, this being a just punishment to unmerciful masters, (who ought to be merciful to their beasts much more to such servants) and a fit recompence to a servant for such a loss. And this law reacheth the loss of any other member, these two being instanced in, the one as the chief, and the other as the meanest, to intimate that other parts of a like or middle nature are included.