Health Systems Institute Homepage
Photo of the Molecular Science and Engineering buildingCISE labPhoto of Taryn Davis at APHA06 HSI Booth

Join HSI email list Join an HSI mailing list

HSI Intranet HSI Intranet

Health Systems Institute
Georgia Institute of Technology
828 West Peachtree Street, NW
2nd Floor
Atlanta, GA 30332-0477
404.385.8193 (phone)
404.385.7452 (fax)

Tags To Tag view



The following is a list of publications produced by HSI related faculty and students. The link for each paper leads you to the citation, keyword, and abstract. For copies of the full papers, please use standard methods for obtaining academic publications, such as online library searches.

Multimodal feedback as a solution to ocular disease-based user performance decrements in the absence of functional vision loss

Authors: J. Jacko, K. Moloney, T. Kongnakorn, L. Barnard, P. Edwards, V. K. Emery, F. Sainfort, I. U. Scott


International Journal of Human Computer Interaction

Abstract: This study examines the effects of the most common cause of blindness in persons over the age of 50 years in the United States, age-related macular degeneration (AMD), on the performance of older adults when completing a simple computer-based task. Older users with normal vision (n = 6) and with AMD (n = 6) performed a series of drag-and-drop tasks that incorporated a variety of different feedback modalities. The user groups were equivalent with respect to traditional visual function parameters (i.e. visual acuity, contrast sensitivity and color vision) and measured subject cofactors, aside from the presence or absence of AMD (i.e. drusen and retinal pigment epithelial mottling). Task performance was assessed with measures of time (trial time and feedback exposure time), and accuracy (error frequency). Results indicate that users with AMD exhibited decreased performance, with respect to required feedback exposure time, total trial time, and errors committed. Some non-visual and multimodal feedback forms show potential as solutions for enhanced performance, for those with AMD as well as for visually healthy older adults.

Citation: Jacko, J. A., Moloney, K. P., Kongnakorn, T., Barnard, L., Edwards, P. J., Emery, V. K., & Sainfort, F. (2005). Multimodal feedback as a solution to ocular disease-based user performance decrements in the absence of functional vision loss. International Journal of Human-Computer Interaction, 18(2), 183-218.

Return to Top of Page
To the Georgia Tech homepageTo the Emory University homepage