Low Vision and Colour Blindness

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 Organization (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 UK, 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 to perform everyday activities. 3