A low vision scenario is one where the person still has some sight available which he/she can use. However, what defines the situation as low vision-specific, is the fact that the person requires one or more of several image enhancements in order to see an image clearly. When referring to a text document for example, these enhancements may include magnification, contrast or colour manipulation or any combination of these.

In some cases, the addition of speech will make the information even further accessible, especially where the low vision person finds that his/her available sight changes through the course of a day. Information can be made accessible through magnification, contrast manipulation, colour manipulation and speech.

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