What Is Eye Tracking?

Eye tracking is exactly what it sounds like. It is when a camera photographs the eye many times a second (between 500-1000). The photograph of the eye in analyzed instantaneously and the position of the eye is analyzed. People sometimes worry that if they move their eyes or blink during the treatment they will become blind or damage their eyes. This is completely untrue. You could probably be playing tennis and still get the laser eye treatment at the same time and put in the right place! You can’t put the treatment in the wrong place unless you aim the tracker in the wrong direction.

Eye Tracking Explained Further…

Your eye will move during surgery. Eye-tracking technology ensures your safety when this happens. Compensating for eye movement is a key factor in ensuring that the laser delivers its beam in exactly the right place. There are different methods of Laser Eye Surgery (video infra-red, 3D, LADAR), all of which involve detecting the position of your eye. There is a minor lag between the laser noticing your eye has moved and compensating for that movement. All trackers, to date, provide approximately the same level of delay time – most operate with a delay of less than ten milliseconds (one hundredth of a second).

Professor Dan Reinstein explains how eye tracking is used. Click to see the video.

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“Claimed back time for myself and husband not looking for the other pair of glasses before leaving the house. Tremendous change seeing everything clearly and not straining.” -Jennifer Sibbald

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