Content supports this profile if it has been specifically designed to facilitate the learning experience for visually impaired users. Content supporting this profile is not, however, guaranteed to be suitable for all visually impaired learners. Vision impairment includes tunnel vision, loss of vision in different parts of a person's visual field, colour blindness, poor acuity, loss of centralised vision and severe vision impairment.

http://vocabulary.curriculum.edu.au/access/10