Hi All, I am not real familiar with eye gaze and calibration. Would a person with Nystagmus be able to be calibrated in order to operate the eye gaze or does the eye movement prevent this from happening? Thanks for your thoughts, Becky Rieken ESU #1 Vision Consultant 211 Tenth Street Wakefield, NE 68784 (402) 287-2061 brieken@esu1.org