But are you talking about the actual Visual Instrument and Sensory Organ Replacement, the multispectral hair-barrettey thing that's wired into a blind person's visual cortex through implanted electrodes on the temples? Or are you just talking about some other visor-like thing that somebody wears over their eyes?
The latter. But since it's bigger and has a thingy that goes on the top of the head as well it's a safe bet we're meant to infer it's an earlier version of it.