The Tobii eye gaze technology (EGT) does not work well on dry eyes. I’ve been using EGT for almost three years now, and in that time, I have unintentionally trained my eyes to stay open for long periods of time. My guesstimate is that I can go up to three minutes without blinking – this is a conservative judgment on my part; I bet if my eye movements were scrutinized under laboratory conditions, the time elapsed between blinks would be much higher. This is not a good thing.
Dry eyes will play havoc with Tobii’s EGT confusing the infrared sensors’ targeting mechanism. You think you’ve got a good calibration and you’re chugging along hitting all your targets, then your cursor starts to dart all over the screen selecting every item but the one you desire. Before you have your caregiver throw Tobii out of the window, close your eyes and count to ten. In most cases, this will take care of the problem sparing you the tedious task of recalibration.
Also, remember to take frequent breaks from your Tobii: this can range from closing your eyes for five minutes or shifting your gaze to something other than your Tobii screen. Following these actions can help with eye fatigue.
Copyright © 2016 Kipling A. Jackson