The Donegan DA-0 OptiVISOR headband binocular visor is intended for use with magnifying lens plates (sold separately) for hands-free viewing. It is made of impact-resistant plastic for durability and has a size-adjustment knob for a customized fit. The visor tilts out of the way when not needed and can be worn over prescription or safety eyeglasses.

Donegan Optical manufactures precision visual devices such as magnifiers and optical loupes. The company, founded in 1952, is headquartered in Lenexa, KS.