Home Forums Software Development Eyes Distance and Pupil Dilation in EyeX?


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  • #1717
    Siavash Mortazavi


    Is there a way to find out eyes relative distance to screen and also pupil dilation factors, using EyeX SDK?

    If yes, could you please tell me how, and if no, is there any other library that can do this? If another library contains these parameter, can I use it in conjunction with EyeX SDK?

    I believe something like this (https://software.intel.com/sites/landingpage/perceptual_computing/documentation/html/) is required for Tobii SDKs.



    Hi Sia,
    you can use the “eye positions” data stream to get the relative distance to the screen. Pupil dilation is not available in the EyeX API, you’ll need a tracker from Tobii’s Analysis product range and the Analytics SDK to record that.

    Thanks for the link to the Intel documentation. We’re planning to give the SDK documentation a major upgrade in the near future.

    Siavash Mortazavi

    @anderstobii Thank you very much for the explanation! 🙂

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