Aerocuda Eyeball is a material found in Tears of the Kingdom.
Tears of the Kingdom
"This eyeball is constantly trying to focus on its targets. Cook it with a critter to make an elixir, or attach it to an arrow to grant a homing quality to the arrow."
Aerocuda Eyeballs can be obtained as a drop from Aerocuda. Link can use the eyeballs to make elixir, or attach to an arrow to allow for a homing ability when shot towards enemies.