Practical Web Inclusion and Accessibility: A Comprehensive Guide to Access Needs

© Ashley Firth  2019

A. FirthPractical Web Inclusion and Accessibilityhttps://doi.org/10.1007/978-1-4842-5452-3_3

3. Low Vision and Colour Blindness

Ashley Firth¹ 

(1)

London, UK

 

Recently, there has been a lot of work on accessibility for blind users, but the vast majority of users with sight-based access needs actually have other forms of visual impairment. The World Health Organisation (WHO) estimates that there are 39 million people living with blindness in the world, but 246 million people with low vision (86% of all visual impairments).¹ In the United Kingdom, the NHS estimates that 300,000 people have severe sight loss, while 2 million experience low vision.² These figures account for visual impairments that interfere with a person’s ability ...