Yeah but his eyes take on a more natural color (here brown) before he does his super shot. If his eyes had returned to their natural colors after the super shot, I wouldn't have asked myself the question, but here I find that the staging hides something.
Another thing that I find strange that could go with my theory: that he shoots with superhuman precision thanks to ocular implants ok, but that he has time to shoot 7 people in combat position (therefore ready to shoot) without any of them having time to react, it makes me think he has some sort of superspeed as well.
(or I just over-analyze the scene it's not impossible)