To complete Optometrist Hive-God's triumph in Destiny 2, you will need to find and destroy all of Savathun's eyes. They are spread all over the place, so in this guide we'll help you find the ones on Mars. You can't destroy them just yet, and the assumption is that you'll need an Exotic Track Rifle coming into the game this season to do so.
Below you'll find maps that show the location of the eye and a screenshot showing exactly where it is in that room. If you'd rather follow a video, the video below will show you how to get to each eye from the closest spawn point.
Braytech Futurescape Spawn
Spawn at Braytech then back out and turn left. The Eye is next to a building to the left of the spawn point.
Anna's room
Spawn in Braytech and head straight to Anna's room. The Eye floats above her.
Aurora Reach
Go through Anna's Room, then into the hallways beyond. When you reach part of the walkway that exits outside, turn left to find the eye.
Rasputin Mindlab
Continue towards the massive Mindlab doors, and you'll find one on the left side of the door.
Lost area of the main terminus
Spawn in Braytech and head to the Core Terminus spawn point in the building to the left of the spawn. The Eye is in the penultimate room.
Ice drift spawning right
Spawn at Glacial Drift and go up the hill on the right. The Eye floats right in front of the large metal doors.
Left of the ice drift spawning
Spawn in Glacial Drift and head left, up the hill, towards the buildings. Enter the small door on the right to find the Eye.
Ma'Adim Subterrane Lost Sector
Go to the Lost Sector and to the boss room. The Eye floats in a crack in the roof.
Alton Dynamo
This one is a bit of a trek. Spawn at Glacial Drift, then go up the hill to the left and all around Alton Dynamo. Go to the hole in the wall and jump the gap in the Rasputin complex. At the first crossroads you meet, turn left and continue to the last room. The Eye is in the roof, hidden by a few panels on the left side.
Descent from Olympus
Another long hike, spawn into Glacial Drift and take the far left turn as you cross the bridge to the left. Follow the path as far as possible, through the tunnels, to reach the Olympus Descent. The eye on a cliff at the very end of the map.