The primary purpose of this iBook is to provide parents with key information about Cortical Visual Impairment (also known as Cerebral Visual Impairment or CVI).
Traditionally, CVI is vision impairment caused by damage to the posterior visual pathways, and/or the occipital lobes of the brain. CVI is the most common cause of vision impairment in children in developed countries.
Many conditions affecting the eye influence the clarity and quality of a visual image (to varying degrees), whereas CVI is a condition affecting the brain and its ability to process visual information, as well as the quality of the visual image. CVI affects the processing and perception of what is seen.
It is hoped that this resource will help parents to identify the main characteristics of CVI that their child is displaying, and to incorporate appropriate strategies to promote their child’s visual functioning throughout their everyday routines. The following information is covered in this book: The Process of Seeing, What is CVI?, Common Characteristics of CVI and a Note about Visual Acuity. This iBook features photos and videos to assist in demonstrating key points.