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Proceedings Paper

Low-cost, smartphone based frequency doubling technology visual field testing using virtual reality (Conference Presentation)
Author(s): Karam A. Alawa; Mohamed Sayed; Alejandro Arboleda; Heather A. Durkee; Mariela C. Aguilar; Richard K. Lee

Paper Abstract

Glaucoma is the leading cause of irreversible blindness worldwide. Due to its wide prevalence, effective screening tools are necessary. The purpose of this project is to design and evaluate a system that enables portable, cost effective, smartphone based visual field screening based on frequency doubling technology. The system is comprised of an Android smartphone to display frequency doubling stimuli and handle processing, a Bluetooth remote for user input, and a virtual reality headset to simulate the exam. The LG Nexus 5 smartphone and BoboVR Z3 virtual reality headset were used for their screen size and lens configuration, respectively. The system is capable of running the C-20, N-30, 24-2, and 30-2 testing patterns. Unlike the existing system, the smartphone FDT tests both eyes concurrently by showing the same background to both eyes but only displaying the stimulus to one eye at a time. Both the Humphrey Zeiss FDT and the smartphone FDT were tested on five subjects without a history of ocular disease with the C-20 testing pattern. The smartphone FDT successfully produced frequency doubling stimuli at the correct spatial and temporal frequency. Subjects could not tell which eye was being tested. All five subjects preferred the smartphone FDT to the Humphrey Zeiss FDT due to comfort and ease of use. The smartphone FDT is a low-cost, portable visual field screening device that can be used as a screening tool for glaucoma.

Paper Details

Date Published: 16 May 2017
PDF: 1 pages
Proc. SPIE 10045, Ophthalmic Technologies XXVII, 100451K (16 May 2017); doi: 10.1117/12.2256535
Show Author Affiliations
Karam A. Alawa, Ophthalmic Biophysics Ctr., Bascom Palmer Eye Institute (United States)
Mohamed Sayed, Anne Bates Leach Eyes Hospital, Bascom Palmer Eye Institute (United States)
Alejandro Arboleda, Ophthalmic Biophysics Ctr., Bascom Palmer Eye Institute (United States)
Heather A. Durkee, Ophthalmic Biophysics Ctr., Bascom Palmer Eye Institute (United States)
Mariela C. Aguilar, Ophthalmic Biophysics Ctr., Bascom Palmer Eye Institute (United States)
Richard K. Lee, Anne Bates Leach Eyes Hospital, Bascom Palmer Eye Institute (United States)


Published in SPIE Proceedings Vol. 10045:
Ophthalmic Technologies XXVII
Fabrice Manns; Per G. Söderberg; Arthur Ho, Editor(s)

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