By Eric Craypo
UC Berkeley's Herbert Wertheim School of Optometry and Vision Science professor Jorge Otero-Millan is among the authors. Other authors include T. Maxwell Parker, Shervin Badihian, Ahmed Hassoon, Ali S. Saber Tehrani, Nathan Farrell, and David E. Newman-Toker.
The authors state that "Smartphones have shown promise in the assessment of neuro-ophthalmologic and vestibular disorders. We have shown that the head impulse test results recorded using our application are comparable with measurements from clinical video-oculography (VOG) goggles. The smartphone uses ARKit's capability to acquire eye and head movement positions without the need of performing a calibration as in most eye-tracking devices. Here, we measure the accuracy and precision of the eye and head position recorded using our application...Our results provide basic metrics evaluating the utility of smartphone applications in the quantitative assessment of head and eye movements. While the new method may not replace the more accurate dedicated VOG devices, they provide a more accessible quantitative option. It may be advisable to include a calibration recording together with any planned clinical test to improve the accuracy."