I really don`t understand the problem here, Edo tensei clearly allows the resurrected to keep his abilities, if any is not really a resurrection, i think the apropiate word is recreation, after all, that wasn`t really the 1st and/or 2nds body there fighting, but they clearly had the same abilities and blood line limit.

If edo tensei can recreate Itachi`s arm, i bet it can create his eyes as well.