Research
Our wealth of experience in research is the cornerstone of VAS Inc. VAS is currently in the process of validating an 80 patient-12month DR/DME Clinical Trial with an enhanced version of the mVT™ with the Phase II SBIR Grant with NIH/NEI.
International Health Informatics Symposium 2010; 502-506
Timely treatment for the patients with early stage diabetic retinopathy (DR) before transition to proliferative diabetic retinopathy (PDR) or diabetic macular edema (DME) depends on detection of symptoms in time. Any test capable of achieving this must be simple, accessible and reliable enough for patients to administer themselves. Shape discrimination test has the potential to allow for timely detection of PDR or DME. Moreover, implementation of this test on handheld devices can present a feasible solution for home self-test of these conditions. The paper presents an iPod/iPhone implementation of the test method and reports initial experimental results. The software solutions include proper UI considerations like simplicity and visual clarity for patients with eye problems, and also the provision for local and remote extraction of test data.
Investigative Opthalmology & Visual Science; 2002:432055-2062
Recent studies suggest that a global shape-discrimination task is sensitive to neural undersampling and/or irregular sampling, but is not affected by normal aging. In this study, the ability of patients with age-related macular degeneration (AMD) to perform the shape-discrimination task was examined. Patients with AMD had significant deficits in performing the global shape-discrimination task. The dissociation of shape discrimination with visual acuity suggests that the shape-discrimination task may provide distinguishable information about the integrity of the photoreceptor mosaic in AMD.
Local and Global Visual Function Deficits in Patients with Stargardt Disease
Wang Y-Z, Birch DG. (2000). OSA Trends in Optics and Photonics; Optical Society of America, Washington, DC
