This is a custom fabricated animatronic eye mechanism designed for a standard 1.125″ human size eyeball. It was created by Dan Thomson and his team at Visionary Effects, a design and fabrication studio specializing in specialty props, set design and construction, makeup effects, sculpture, mold-making, and animatronics. To learn more about Dan’s work be sure to check him out at VisionaryEffects.com.
Source: Neatorama