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Visual Agnosia

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...

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Related Experiment Video

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Author Spotlight: Insights into Visual Cortex Research Through Wide-View fMRI Mapping

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An Evidence-Based Approach to Augmentative and Alternative Communication Design for Individuals With Cortical Visual

Krista M Wilkinson¹, Lynn R Elko², Emma Elko²

¹Department of Communication Sciences and Disorders, The Pennsylvania State University, University Park.

American Journal of Speech-Language Pathology

|August 18, 2023

Summary

Creating tailored augmentative and alternative communication (AAC) systems for individuals with cortical visual impairment (CVI) is crucial. A collaborative framework involving professionals, families, and tech companies can optimize visual and communication outcomes.

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Last Updated: Jul 19, 2025

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Published on: December 8, 2023

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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

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Published on: April 11, 2025

Area of Science:

Ophthalmology and Vision Science
Communication Sciences and Disorders
Assistive Technology

Background:

Cortical visual impairment (CVI) presents unique challenges for communication.
Existing augmentative and alternative communication (AAC) systems may not adequately address the visual processing needs of individuals with CVI.
A multidisciplinary approach is needed to develop effective AAC solutions.

Approach:

This article synthesizes research on CVI and AAC, incorporating perspectives from service providers, researchers, and individuals with CVI.
It reviews essential features for AAC systems designed for individuals with CVI.
The study presents a framework for optimizing AAC design through collaboration.

Key Points:

Tailored AAC system design is essential for individuals with CVI.
Collaboration among professionals, researchers, families, and technology developers is vital.
Incorporating lived experiences and research evidence informs clinical considerations and design features.
Individualized assessments and interventions are critical for success.

Conclusions:

Optimizing AAC design for CVI requires a deep understanding of unique visual processing characteristics.
A framework integrating research and practical insights can improve communication outcomes for individuals with CVI.
The lived experience of individuals with CVI underscores the importance of personalized support.