Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Characteristics of CVI

996 views

Published on

This presentation explains the ten characteristics associated with Cortical Visual Impairment.

Published in: Technology, Health & Medicine
  • Be the first to comment

  • Be the first to like this

Characteristics of CVI

  1. 1. Ten Characteristics of Cortical Visual Impairment By Kristy Josuweit TVI
  2. 2. Cortical Visual Impairment• Definition: Cortical Visual Impairment (CVI) is a breakdown in communication between the eyes and the brain.• Children & adults with CVI present with most or all of the following ten characteristics (Roman, 2007).Roman-Lantzy, C. (2007). Cortical visual impairment: an approach to assessment andintervention. New York, NY: AFB Press.
  3. 3. Color & Movement• Color:• Has a preferred color: Typically red or yellow• Only that preferred color is seen• Movement:• Object must move to be seen
  4. 4. Latency & Light Gazing• Latency:• When object is presented, visual attention is delayed• Light Gazing:• Child looks at light for extended period of time
  5. 5. Visual Complexity and Field Preferences• Three types of Visual Complexity:• surface of object: too many colors on one object• viewing array: too many objects in one space• Sensory environment: background noise is distracting• Field Preferences:• Child holds visual gaze in limited visual fields
  6. 6. Distance Viewing & Visual Reflexes• Distance Viewing:• Child sees best with objects close to face• Visual Reflexes: Child does not blink to touch and or to visual threat
  7. 7. Visual Novelty & Visual Motor• Visual Novelty:• Child only visually attends to familiar objects• Visual Motor:• Look and reach are separate events• No visually guided reach

×