Visor

v. supply or cover with a visor

n. sun-shield; face shield; projecting brim for shading the eyes; part of a helmet covering the face or eyes

In the Star Trek fictional universe, a VISOR is a device used by the blind to artificially provide them with a sense of sight. The device scans the electromagnetic spectrum, creating visual input, and transmits it into the brain of the wearer via the optic nerves. It is a thin, curved device, with the sensors on the side, that covers the eyes and attaches at small input jacks implanted in the temples. The only VISOR seen on screen was used by  Geordi La Forge, who was blind from birth. VISOR stands for "Visual Instrument and Sensory Organ Replacement", though the complete term never appeared in the series, only in novelizations and other written spin-offs.
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A visor is a surface that protects the eyes, such as shading them from the sun or other bright light or protecting them from objects. Types of visors include:A type of hat consisting only of a visor and a way to fasten it to the head. The transparent or semi-transparent front part of a motorcycle crash helmet or police riotsquad helmetAny such vertical surface on any hat or helmet.Any such horizontal surface on any hat or helmet (called a peak in British English).The part of a helmet in a suit of armor that protects the eyes.A device in an automobile that the driver or front passenger can lower over part of the windshield to block the sun (sun visor).A shield to protect the eyes from sunlight on a flight helmet, or an American football helmet. Green eyeshades, formerly worn by accountants and others engaged in vision-intensive, detail-oriented occupations
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In the United Kingdom, the Violent and Sex Offender Register (ViSOR) is a database that can be accessed by the Police and some Probation Service personnel. The database holds records of those required to register with the Police under the Sexual Offences Act 2003, those jailed for more than 12 months for violent offences, and unconvicted people thought to be at risk of offending.
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Noun
1. a piece of armor plate (with eye slits) fixed or hinged to a medieval helmet to protect the face
(synonym) vizor
(hypernym) armor plate, armour plate, armor plating, plate armor, plate armour
(part-holonym) helmet
2. a brim that projects to the front to shade the eyes; "he pulled down the bill of his cap and trudged ahead"
(synonym) bill, peak, eyeshade, vizor
(hypernym) brim
(part-holonym) baseball cap, jockey cap, golf cap

n. (Computers) browser, program used for viewing sites on the World Wide Web; viewfinder, device on a camera that shows the photographer which images are included in the picture

n. finder, sight