The Relationship Between Cortical Visual Impairment (CVI) and Communication

Quick Overview

Dr. Karen Erickson’s presentation at the ASF Family Conference explored the link between cortical visual impairment (CVI) and communication, particularly in children with Angelman Syndrome. CVI, a brain-based visual impairment, is prevalent in children with developmental disabilities and those experiencing seizures. Dr. Erickson highlighted behavioural indicators of CVI, such as a preference for bright colours, movement, and difficulty with visually guided touch. These indicators can impact language acquisition and the use of augmentative and alternative communication (AAC) devices, which are often visually complex. The research aims to determine the prevalence of CVI in the Angelman community and its impact on communication outcomes. Early intervention is crucial, and the study seeks to develop better AAC solutions for children with CVI. Dr. Erickson emphasised the potential for literacy development in children with CVI, advocating for a focus on familiarising them with the alphabet to enhance communication skills.

Dr. Karen Erickson, a distinguished professor and director at the Center for Literacy and Disability Studies, recently delivered an insightful presentation at the ASF Family Conference. Her talk focused on the intricate relationship between Cortical Visual Impairment (CVI) and communication, particularly in children with developmental disabilities such as Angelman Syndrome.

Understanding CVI

CVI is a brain-based visual impairment that affects the visual pathways rather than the eyes themselves. This condition is prevalent among children with developmental disabilities and those who experience seizures. Dr. Erickson highlighted that CVI is the most common permanent visual impairment in children, with studies indicating a significant prevalence in populations with conditions like cerebral palsy and Down syndrome.

Behavioural Indicators of CVI

Dr. Erickson shared several behavioural indicators that suggest a child might have CVI. These include a preference for bright, saturated colours, an attraction to movement, and atypical responses to visual stimuli. Children with CVI often have difficulty with visually guided touch, where they look away from an object as they reach for it. They also struggle with processing complex visual information and multisensory inputs, such as listening and looking simultaneously.

CVI and Communication Challenges

The impact of CVI on communication is profound, especially for children who do not use speech. Augmentative and Alternative Communication (AAC) devices, which are visually complex, can pose additional challenges for these children. Dr. Erickson recounted a case where adapting the AAC setup significantly improved a child’s ability to communicate, demonstrating the importance of tailoring communication tools to individual needs.

Research and Future Directions

Dr. Erickson’s ongoing research, funded by the Angelman Syndrome Foundation, aims to better understand the prevalence of CVI in children with Angelman Syndrome and its impact on communication outcomes. Preliminary findings suggest a strong correlation between CVI and communication difficulties, underscoring the need for early intervention and tailored AAC solutions.

The Path to Literacy

In response to a question from the audience, Dr. Erickson expressed optimism about teaching literacy to children with CVI. By focusing on familiarising children with the 26 letters of the alphabet, educators can reduce visual complexity and enhance communication skills. This approach aligns with her long-term goal of empowering children with CVI to express themselves more effectively.

Dr. Erickson’s work highlights the critical need for awareness and early diagnosis of CVI, as well as the development of communication strategies that accommodate the unique challenges faced by children with this condition. Her research continues to pave the way for improved educational and communicative outcomes for children with CVI and related disabilities.