Cerebral palsy is caused by damage to the infant brain. This damage can involve not only the motor parts of the brain, but also the parts that deal with vision. This is not related to damage to the eye but is related to damage of the parts of the brain that process visual information.
Everybody tells stories, and that includes people who use communication systems. To ensure success and the ability to participate we need to make it as easy as possible. So that we can tell stories whenever we want, wherever we want, to whomever we want, and in a really easy way, so we can be successful.