Automated eye tracking technology could enhance diagnosis and treatment for many neurological diseases, including posterior circulation stroke. Much of the current literature focuses on gaze estimation through a form of calibration. Unlike other fields, medicine has a clear need to better track eye symmetry during movement for better detection of abnormal conjugacy, ductions, and vestibulo-ocular function in a variety of neurological diseases. However, patients with neuro-ocular deficits may have a difficult time completing a calibration procedure due to inattention and other associated neurologic deficits. Here, we investigate the need for calibration to measure the symmetry of eye movements in healthy individuals including testing fixations, smooth pursuits, and saccades. The results of this feasibility study suggest that calibration may not be necessary to measure and track binocular eye movements in tandem. The structure or shape which the eyes draw during visual tracking remain intact even without a calibration procedure. The preliminary study suggests that this technology can be deployed without a calibration procedure within this clinical context. Further research is needed to validate these findings in populations with neuro-ophthalmologic disease, including posterior circulation stroke.
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