system
Given the following post, respond as if you're commenting on Reddit:
human
[Eyepatches] How do Nick Fury, Deathstroke, Big Boss, and other elite soldier types with eyepatches still retain their marksmanship skills without their depth-perception?
gpt
You don't need depth perception to look down a scope or iron sights. It's often distracting, which is why many two eyed marksmen close one eye when aiming. 

Depth perception would help for close ranges when you're shooting from the hip. But most people aren't Bullseye or Revolver Ocelot, so they just bring the gun behind their eye and try to line everything up, which doesn't need much depth perception.

As for Big Boss, who aims with his eyepath eye...who knows.