Editing Color blindness (section)

===Occupations===
Color blindness may make it difficult or impossible for a person to engage in certain activities. Persons with color blindness may be legally or practically barred from occupations in which color perception is an essential part of the job (''e.g.,'' mixing paint colors), or in which color perception is important for safety (''e.g.,'' operating vehicles in response to color-coded signals). This occupational safety principle originates from the aftermath of the 1875 [[Lagerlunda rail accident|Lagerlunda train crash]], which [[Alarik Frithiof Holmgren]] blamed on the color blindness of the engineer and created the first occupational screening test ([[Holmgren's wool test]]) against the color blind.<ref name=VC86/>

{{Blockquote
|text=...I consider that to [Holmgren] above all others do we owe the present and future control of color-blindness on land and sea, by which life and property are safer, and the risks of travelling less.
|author=Benjamin Joy Jeffries
|source=''Color-blindness: Its Danger & Its Detection'' (1879)
}}

Color vision is important for occupations using telephone or computer networking cabling, as the individual wires inside the cables are color-coded using green, orange, brown, blue and white colors.<ref>{{cite book|last=Meyers|first=Michael|title=All in One A+ Certification Exam Guide|edition=4th|year=2002|publisher=McGraw-Hill/Osborne|location=Berkeley, California|isbn=978-0-07-222274-6|url=https://archive.org/details/allinoneacertif000meye}}{{page needed|date=August 2015}}</ref> Electronic wiring, transformers, resistors, and capacitors are color-coded as well, using black, brown, red, orange, yellow, green, blue, violet, gray, white, silver, and gold.<ref>{{cite book|last=Grob|first=Bernard|title=Basic Electronics|year=2001|publisher=Glencoe/McGraw-Hill|location=Columbus, Ohio|isbn=978-0-02-802253-6}}{{page needed|date=August 2015}}</ref>

Participation, officiating and viewing sporting events can be impacted by color blindness. Professional football players [[Thomas Delaney]] and [[Fábio Carvalho (footballer, born 2002)|Fabio Carvalho]] have discussed the difficulties when color clashes occur, and research undertaken by FIFA has shown that enjoyment and player progression can be hampered by issues distinguishing the difference between the pitch and training objects or field markings.<ref>{{Cite web|url=https://www.tacbis.eu/news/football-players-shocked-when-experiencing-colour-blindness/|title=Football players shocked when experiencing Colour Blindness|website=Tacbis|access-date=9 April 2023|archive-date=9 April 2023|archive-url=https://web.archive.org/web/20230409133028/https://www.tacbis.eu/news/football-players-shocked-when-experiencing-colour-blindness/|url-status=live}}</ref> [[Snooker]] [[World Snooker Championship|World Champions]] [[Mark Williams (snooker player)|Mark Williams]] and [[Peter Ebdon]] sometimes need to ask the referee for help distinguishing between the red and brown balls due to their color blindness. Both have played foul shots on notable occasions by {{cuegloss|pot|potting}} the wrong ball.<ref>{{cite web |url=http://www.billiardindex.com/MarkWilliams.html |title=Billiard Index: Mark Williams MBE player profile |website=Billiard Index |access-date=15 November 2023 |url-status=dead |archive-url=https://web.archive.org/web/20080708183938/http://www.billiardindex.com/MarkWilliams.html |archive-date=8 July 2008}}</ref><ref>{{cite web |title=Hawkins on Top Down Under |url=https://wst.tv/hawkins-on-top-down-under/ |url-status=dead |publisher=[[World Snooker Tour]] |date=2012-07-15 |access-date=2023-11-15 |archive-date=2023-10-17 |archive-url=https://web.archive.org/web/20231017161334/https://wst.tv/hawkins-on-top-down-under/}}</ref><ref>{{cite web |date=13 October 2008 |title=Rueful Ebdon mistakes brown for red |url=http://news.bbc.co.uk/sport2/hi/other_sports/snooker/7668421.stm |url-status=live |archive-url=https://web.archive.org/web/20120504082800/http://news.bbc.co.uk/sport2/hi/other_sports/snooker/7668421.stm |archive-date=4 May 2012 |access-date=15 November 2023 |work=[[BBC Sport]]}}</ref>