The video clip of Ben talking about his visual impairment and use of assistive technologies is part of a discussion about recognising barriers from the Open University ‘Making your teaching inclusive‘.
Visual acuity is related to what can be seen in detail and is initially tested by use of an optometrist’s chart with letters of different sizing and spacing. The term visual impairment is used to describe anyone who is blind or partially sighted, where may be some loss or distortion of vision, as opposed to short or long-sighted. (NHS direct)
SCIPS – Characteristics of Visual Difficulties Impacting on Learning and Teaching and the W3C Web Accessibility Initiative (WAI) provides a collection of resources on how people with disabilities use the web.