Check out the undead peepers in this video where THE WALKING DEAD’s lens tech, Gazal Tabrizpor, shows us how zombie eyes are being created for season two.

In the following clip, Trabizpor describes what goes into giving THE WALKING DEAD’s zombies their ghastly stare and why the new contact lenses are “a little more gruesome” and “a lot more detailed.”

THE WALKING DEAD returns to AMC on Sunday, October 19 at 10 p.m. ET with a special 90-minute episode.

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