Integrated eye tracking is available for using with all Varjo headsets, and allows to follow the headset user’s eye movements with a sub-degree accuracy.
The eye tracking has been designed to work with most single-vision eyeglasses. However, the technology is not guaranteed to work with all medical devices or eye conditions.
Calibrating eye tracking
Eye tracking calibration is done by following a moving dot with your eyes. For eye tracking to work accurately, position the headset correctly so that the cameras can see your eye movements. Make sure that the headset stays firmly in place while you are wearing it and that the image looks sharp. The headset may show you additional instructions on how to correctly position the headset before calibration starts.
Your application can be programmed to start the calibration automatically. You can also start the calibration manually. See instructions below depending on your headset model.
XR-4 Series, XR-3, VR-3, and Varjo Aero
In Varjo Base, you can choose the type of calibration that is used when eye tracking is calibrated automatically and manually. Navigate to Settings > Eye tracking > Eye tracking calibration. The options available are:
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Single-dot (Default) |
Suitable for general use. Recommended when high precision is not required. |
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High accuracy |
A detailed calibration method providing high accuracy eye tracking. Ideal for users needing precise data or wearing thick eyeglasses. |
Depending on your use case, the single-dot calibration for eye tracking is often sufficient for good quality. For more accurate results, you can enable automatic eye tracking calibration each time you put on the headset or start the calibration manually from Varjo Base or the headset Menu.
Automatic eye tracking calibration
In Varjo Base, you can choose how often eye tracking is calibrated. Navigate to Settings > Eye tracking > Automatic eye tracking calibration. The following options are available:
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Always calibrate (Default) |
Eye tracking is calibrated whenever you put on the headset. This option is best suited for situations where several people share a headset and provides the best possible image quality. |
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Remember my calibration |
Eye tracking is calibrated once. Your calibration settings are saved and reused in future sessions. This option is most useful when only one person is using the headset. |
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Best estimate without calibration |
Eye tracking is calibrated using data from a statistical sample. This option works best when several people are using the headset in quick succession. Note that without calibration, eye tracking accuracy is not sufficient for the most demanding applications. |
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Never calibrate |
Eye tracking is not calibrated. The area with the highest resolution is locked to the center of the display. This option can be a useful fallback if, for example, you cannot complete calibration with certain types of eyeglasses. |
Manual eye tracking calibration
Starting a calibration from the Menu:
- Open the Menu.
- Select Calibrate.
Starting the calibration from Varjo Base:
Varjo Base 4.10 or newer
- Navigate the toolbar in Varjo Base.
- Select Calibrate.
Varjo Base version 4.7.1 or older
- Navigate to the Tools menu in Varjo Base.
- Select Analytics window > Eye tracking > Calibrate.
If you have turned on Remember my calibration in Varjo Base, you don’t need to calibrate between sessions.
XR-1 Developer Edition, VR-2 Pro, VR-2, and VR-1
Choose one of the following to start eye tracking calibration:
- in Varjo Base in the Tools menu, select Calibrate eye tracking
- in Varjo Base settings, navigate to Headset tab and choose Eye tracking calibration > Start
- in the headset Menu, select the shortcut for Calibrate eye tracking