Low-cost, smartphone-based frequency doubling technology visual field testing using a head-mounted display

Background Current visual field screening machines are bulky and expensive, limiting their accessibility, affordability and use. We report the design and evaluation of a novel, portable, cost-effective system for glaucoma screening using smartphone-based visual field screening using frequency doubling technology (FDT) and a head-mounted display. Methods Nineteen eyes of 10 subjects with new-onset or chronic primary open angle glaucoma were...