In the fictional Star Trek universe, a VISOR is a device used to scan the electromagnetic spectrum, create visual input, and transmit it into the brain of the wearer via the optic nerves. It is a thin, curved device, with the sensors on the convex side, that covers the eyes and attaches at small input jacks implanted in the temples. The only known VISORs were used by the Enterprise-D's chief engineer, Geordi LaForge, who has been naturally blind from birth. VISOR ostensibly stands for "Visual Instrument and Sight Organ Replacement", but this is most likely a backronym.

As well as supplying Geordi La Forge with the sense of sight, the VISOR also caused him constant pain. Geordi endured this pain without complaining.

In reality, a news story was recently released stating that a group of scientists and doctors are researching as to whether a device similar to a VISOR can actually be created for blind or visually-impaired people.

• ViSOR in the United Kingdom is the Violent and Sex Offender Register.