Portable Vision Field Screening Device

Abstract

Abstract: : Purpose: To test the efficacy of a novel portable vision field screening device (PVFD) that was built at the Tulane Glaucoma Service. Methods: The PVFD consists of a head mounted display that is connected to visual field algorithm software on a Palm pilot and a remote control. The test algorithm used for the study purposes was based on the Damato Campimeter. Advantages of the new device include a truly portable device with the ability to change the algorithm and use it in any setting, ease of usage and cost effectiveness ( < $ 1000.00) . Forty patients from the Tulane Glaucoma Service were recruited for the study. The visual field results from the PVFD was compared to the Humphrey 30–2 SITA standard test(HVF). Patients were also asked to compare the HVF test to the PVFD in terms of ease of usage and comfort level. Results: Compared to the HVF results, the PVFD using the Damato campimeter algorithm attained 82% sensitivity and 80% specificity. 100% of the patients found the PVDF easier to use and expressed satisfaction. The average time taken for the PVFD was 1 minute per eye compared to 7 minutes with the HVF. Conclusions: The initial results from the PVFD compares well with that of the HVF. We plan to test different algorithms and in different settings such as in the health camp settings. Supported by Tulane Glaucoma Research Fund

Keywords: visual fields