Audio-Visual Thumble (AVT): A low-vision rehabilitation device using multisensory feedbacks.

Area of Science:

• Neuroscience
• Biomedical Engineering
• Ophthalmology

Background:

• Sensory substitution devices have aided blind individuals since the 1970s.
• Macular Degeneration causes central vision loss (scotoma), impairing visual and audio localization.
• Current rehabilitation for Macular Degeneration primarily uses visual-only methods.

Purpose of the Study:

• To introduce the Audio Visual Thumble (AVT), a novel sensory substitution device.
• To investigate the potential of AVT for low-vision individuals with Macular Degeneration.
• To explore AVT's ability to enhance spatial skills by associating multisensory feedback with movement.

Main Methods:

• Development of the Audio Visual Thumble (AVT) device, a pharyngeal ring with LED and buzzer.
• Focus on low-vision patients with Macular Degeneration and associated visual field defects.
• Integration of audio-visual feedback with proprioceptive feedback from user movement.

Main Results:

• The AVT device provides multisensory (audio, visual, proprioceptive) feedback.
• It is designed to help individuals associate sensory information with their own movements.
• Potential to improve identification of targets in peripheral or residual visual fields.

Conclusions:

• The Audio Visual Thumble (AVT) shows promise for improving spatial localization in Macular Degeneration patients.
• AVT can serve as an adjunct to existing rehabilitation techniques for low-vision individuals.
• This device offers a novel approach by leveraging intact sensory modalities for visual rehabilitation.