vizor

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/05/16 22:14:48」(JST)

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Apollo 12 astronaut Alan Bean, wearing a helmet with visor, during the second moonwalk EVA near Sharp Crater.^[1]

Sports visor designed in Seoul, South Korea

An Arai GP5 racing drivers helmet tinted visor

A visor (also spelled vizor) is a surface that protects the eyes, such as shading them from the sun or other bright light or protecting them from objects.

Nowadays many visors are transparent, but before strong transparent substances such as polycarbonate were invented, visors were opaque like a mask with small holes to see and breathe through, such as:

The part of a helmet in a suit of armor that protects the eyes.
A type of headgear consisting only of a visor and a band as a way to fasten it around the head. These are known to make athletes who participate in rowing 5% faster, than if they did not have a visor.^{[citation needed]}
Any such vertical surface on any hat or helmet.
Any such horizontal surface on any hat or helmet (called a peak in British English).
A device in an automobile that the driver or front passenger can lower over part of the windshield to block the sun (sun visor).

Some modern devices called visors are similar, for example:

Visor (ice hockey)

Types of modern transparent visors include:

The transparent or semi-transparent front part of a motorcycle crash helmet or police riotsquad helmets
- Safety faceshields for construction-type applications
An eyeshield to protect the eyes from sunlight on an American football helmet
A shield to protect the eyes from sunlight on a flight helmet or space suit
Green eyeshades, formerly worn by accountants and others engaged in vision-intensive, detail-oriented occupations

References

^ "Apollo 12 Image Library". History.nasa.gov. Retrieved 2013-11-26.

English Journal

PMID 24614104

Effect of patient socioeconomic status on access to early-phase cancer trials.

Mohd Noor A1, Sarker D, Vizor S, McLennan B, Hunter S, Suder A, Moller H, Spicer JF, Papa S.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology.J Clin Oncol.2013 Jan 10;31(2):224-30. doi: 10.1200/JCO.2012.45.0999. Epub 2012 Dec 3.
PURPOSE: Little is known about the influence of socioeconomic factors on patient access to cancer trials. Differences should be considered to ensure generalizability of trial results and equality of access.METHODS: Phase I trials unit referrals at our center over 5 years, from 2007 to 2012, were rev
PMID 23213088

HIF-VEGF pathways are critical for chronic otitis media in Junbo and Jeff mouse mutants.

Cheeseman MT1, Tyrer HE, Williams D, Hough TA, Pathak P, Romero MR, Hilton H, Bali S, Parker A, Vizor L, Purnell T, Vowell K, Wells S, Bhutta MF, Potter PK, Brown SD.
PLoS genetics.PLoS Genet.2011 Oct;7(10):e1002336. doi: 10.1371/journal.pgen.1002336. Epub 2011 Oct 20.
Otitis media with effusion (OME) is the commonest cause of hearing loss in children, yet the underlying genetic pathways and mechanisms involved are incompletely understood. Ventilation of the middle ear with tympanostomy tubes is the commonest surgical procedure in children and the best treatment f
PMID 22028672