From Warhammer 40k - Lexicanum
The Bale Eye is part of the wargear of Commissar Sebastian Yarrick. It is an optical implant which also functions as a short-ranged laser, similar in effect to a laspistol at close range. It is rumoured within Ork camps that Yarrick could kill with a glance, and the Bale Eye is where this rumour came from.
Other sources indicate that this rumor started shortly after Yarrick lead the successful defense of Hades Hive from Warboss Ugulhard's Waaagh! He lost his left eye during later campaigns and decided to play upon the orks' fears and incorporate a real "evil eye" into the implant.
- 1: Codex: Imperial Guard (3rd Edition, 2nd Codex), pg. 52
- 2: Codex: Imperial Guard (3rd Edition, 1st Codex), pg. 24
- 3: Codex: Imperial Guard (2nd Edition), pg. 64
- 4: Codex: Imperial Guard (5th Edition), pg. 63