Colour blindness

Incidence:

According to the NHS (2018) colour blindness affects approximately 8% of men and 0.5% of women.

Characteristics:

According to Colour Blind Awareness (2018) very few people see no colour at all, most individuals will be able to see some, but not all, colours and those colours which they cannot see, or distinguish, will vary from individual to individual. There are three primary colours and it is possible for an individual to have reduced or no perception of one, or more, of these colours. So, for example, if an individual cannot see yellow, they will not be able to distinguish between blue and green, because green is a combination of blue and yellow. The most common form of colour blindness will cause an individual to have problems distinguishing between colours that contain red and green.

Impact on teaching and learning and assessment:

Colour blindness can affect an individual’s ability to glean information from charts and diagrams, where information is only conveyed through colours. It can affect a person’s ability to read maps, understand pictures, filmed and animated material.

This important to ensure that course material and exam papers do not only rely on colour to relay information. There are a number of free online programs where you can upload images to determine whether they will be accessible to individuals who are colour blind.

 

 

 

 

 

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