Items, NPCs, quests, objects and spells of patch 1.12.1, read live from the realm itself.

Intact Makrura Eye

NPC	Level	Zone	Chance
Makrura Clacker	6 - 7	Durotar	80.0%
Makrura Shellhide	6 - 7	Durotar	80.0%
Makrura Snapclaw	8 - 9	Durotar	80.0%
Makrura Elder	8 - 9	Durotar	80.0%
Slimeshell Makrura	18 - 19	The Barrens	40.0%