Color vision and the railways: Part 1. The railway LED lantern test

Purpose. Lantern tests and practical tests are often used in the assessment of prospective railway employees. The lantern tests rarely embody the actual colors used in signaling on the railways. Practical tests have a number of problems, most notably consistency of application and practicability. Th...

Full description

Bibliographic Details
Main Authors:	Dain, Stephen J, Casolin, Armand, Long, Jennifer, Hilmi, Mohd Radzi
Format:	Article
Language:	English
Published:	Wolters Kluwer Health 2015
Subjects:	RE Ophthalmology
Online Access:	http://irep.iium.edu.my/72276/ http://irep.iium.edu.my/72276/ http://irep.iium.edu.my/72276/ http://irep.iium.edu.my/72276/1/Color_Vision_and_the_Railways__Part_1__The_Railway.5.pdf

id	iium-72276
recordtype	eprints
spelling	iium-722762019-05-17T06:34:40Z http://irep.iium.edu.my/72276/ Color vision and the railways: Part 1. The railway LED lantern test Dain, Stephen J Casolin, Armand Long, Jennifer Hilmi, Mohd Radzi RE Ophthalmology Purpose. Lantern tests and practical tests are often used in the assessment of prospective railway employees. The lantern tests rarely embody the actual colors used in signaling on the railways. Practical tests have a number of problems, most notably consistency of application and practicability. This work was carried out to provide the Railway LED Lantern Test (RLLT) as a validated method of assessing the color vision of railway workers. Methods. The RLLT, a simulated practical test using the same LEDs (light-emitting diodes) as are used in modern railway signals, was developed. It was tested on 46 color visionYnormal (CVN) and 37 color visionYdeficient (CVD) subjects. A modified prototype was then tested on 106 CVN subjects. Results. All 106 CVN subjects and most mildly affected CVD subjects passed the modified lantern at 3 m. At 6 m, 1 of the 106 normal color vision subjects failed by missing a single red light. All the CVD subjects failed. The RLLT carried out at 3 m allowed mildly affected CVD subjects to pass and demonstrate adequate color vision for the less demanding railway tasks. Carried out at 6 m, it essentially reinforced normal color vision as the standard. Conclusions. TheRLLTisasimplyadministeredtestthathasadirectlinktotheactualvisualtaskoftherailworker.TheRLLT lantern has been adopted as an approved test in the Australian National Standard for Health Assessment of Rail Safety Workers in place of a practical test. It has the potential to be a valid part of any railway color vision standard. Wolters Kluwer Health 2015-02 Article PeerReviewed application/pdf en http://irep.iium.edu.my/72276/1/Color_Vision_and_the_Railways__Part_1__The_Railway.5.pdf Dain, Stephen J and Casolin, Armand and Long, Jennifer and Hilmi, Mohd Radzi (2015) Color vision and the railways: Part 1. The railway LED lantern test. Optometry and Vision Science, 92 (2). pp. 138-146. ISSN 1040-5488 E-ISSN 1538-9235 https://journals.lww.com/optvissci/Fulltext/2015/02000/Color_Vision_and_the_Railways__Part_1__The_Railway.5.aspx 10.1097/OPX.0000000000000460
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	RE Ophthalmology
spellingShingle	RE Ophthalmology Dain, Stephen J Casolin, Armand Long, Jennifer Hilmi, Mohd Radzi Color vision and the railways: Part 1. The railway LED lantern test
description	Purpose. Lantern tests and practical tests are often used in the assessment of prospective railway employees. The lantern tests rarely embody the actual colors used in signaling on the railways. Practical tests have a number of problems, most notably consistency of application and practicability. This work was carried out to provide the Railway LED Lantern Test (RLLT) as a validated method of assessing the color vision of railway workers. Methods. The RLLT, a simulated practical test using the same LEDs (light-emitting diodes) as are used in modern railway signals, was developed. It was tested on 46 color visionYnormal (CVN) and 37 color visionYdeficient (CVD) subjects. A modified prototype was then tested on 106 CVN subjects. Results. All 106 CVN subjects and most mildly affected CVD subjects passed the modified lantern at 3 m. At 6 m, 1 of the 106 normal color vision subjects failed by missing a single red light. All the CVD subjects failed. The RLLT carried out at 3 m allowed mildly affected CVD subjects to pass and demonstrate adequate color vision for the less demanding railway tasks. Carried out at 6 m, it essentially reinforced normal color vision as the standard. Conclusions. TheRLLTisasimplyadministeredtestthathasadirectlinktotheactualvisualtaskoftherailworker.TheRLLT lantern has been adopted as an approved test in the Australian National Standard for Health Assessment of Rail Safety Workers in place of a practical test. It has the potential to be a valid part of any railway color vision standard.
format	Article
author	Dain, Stephen J Casolin, Armand Long, Jennifer Hilmi, Mohd Radzi
author_facet	Dain, Stephen J Casolin, Armand Long, Jennifer Hilmi, Mohd Radzi
author_sort	Dain, Stephen J
title	Color vision and the railways: Part 1. The railway LED lantern test
title_short	Color vision and the railways: Part 1. The railway LED lantern test
title_full	Color vision and the railways: Part 1. The railway LED lantern test
title_fullStr	Color vision and the railways: Part 1. The railway LED lantern test
title_full_unstemmed	Color vision and the railways: Part 1. The railway LED lantern test
title_sort	color vision and the railways: part 1. the railway led lantern test
publisher	Wolters Kluwer Health
publishDate	2015
url	http://irep.iium.edu.my/72276/ http://irep.iium.edu.my/72276/ http://irep.iium.edu.my/72276/ http://irep.iium.edu.my/72276/1/Color_Vision_and_the_Railways__Part_1__The_Railway.5.pdf
first_indexed	2023-09-18T21:42:24Z
last_indexed	2023-09-18T21:42:24Z
_version_	1777413226943741952

Color vision and the railways: Part 1. The railway LED lantern test

Similar Items