Forestier hi,

Just few thoughts on your choice.

- for the on-screen tracking in a lab, both trackers will be more accurate, than glass-based model, given that you use a chinrest to prevent head movement.

- both trackers will provide you pupil sizes for both eyes and raw gaze data, no difference here. The advantage of Tobii is that its algorithm for non-raw gaze positions can compensate for head movements in a certain range.

- I think that the GazePoint is significantly cheaper, than Tobii X2-60

- Tobii software, SDK, and drivers are best among many competitors.

- In my experience, GazePoint is very sensitive to calibration, which may require more efforts than with Tobii. Once GazePoint is calibrated well, its accuracy is quite decent.

and, finally, if you need powerful software for eye-tracking and pupillometry , check our project, EventIDE (www.okazolab.com). Our software supports all features of these trackers.

Ilia Korjoukov and Leon Gmeindl thank you very much for your answers !

For budget issues, we will probably not buy Eyelink hardware (that seems to be one of the best on the market anyway). Moreover, we will not buy Tobii for another reason, the impossibility to have access to raw data, only to data transformed by Tobii algorithm and colleagues working with eye-tracking devices (Eyelink 1000) do not recommand me that ...

With the budget we have, we will probably buy the Gazepoint GP3 but the HD version (150 Hz), not the first prices but his grand brother :)

I hope we will be able to do what we want to do with this device and get reliable data !

Ilia Korjoukov I'll have a serious look at your platform and project, thank you for sharing it. I let you know in the month to come if it could interest us :)

Once again many thanks,

Cyril Forestier

EyeLink, definitely.

Hi Forestier,

I just wanted to recommend some other alternatives in case you hadn't seen them (although I think the Gazepoint GP3 HD could also meet your needs):

EyeTech VT3 Mini: https://imotions.com/eyetech-vt3-mini/

Smart Eye Aurora: https://imotions.com/smart-eye-aurora/

Hi Forestier Cyril - I want to make sure that accurate information is presented here! When you use a Tobii Pro eye tracker, you do get the raw gaze data. The Tobii algorithm uses a unique 3D eye model to calculate gaze position for left/right eye separately as well as the 3D gaze convergence point, but no other filtering is done to those gaze points or metrics. I hope that helps! If you have other questions, let me know (my email is marisa.biondi AT tobii.com, or message me here).

Hi Marisa Biondi . Sorry for the misunderstanding, it was not what the person from tobii that came to my university told us (or I misunderstood) and not what I found on internet .. But I think that your message will clarify questions for future researchers :)

Anyway, now we bought a GazePoint GP3 HD because of the budget we have..

Thanks to everybody that took some times to answer me.

Best,

Cyril

Forestier Cyril;

Have you used the device? What kind of device? Are you satisfied with the device?

I'm looking for a device for this kind of research.

Is the GP3 HD device suitable for ADHD children aged 5-10 years? Is the headbox flexible. Do you have any information?

Guess the most affordable budget device GP3 HD on the market. There are 3 different software packages of this device.

GP3 HD Professional Bundle | Eye tracking for research

GP3 HD UX Bundle | Eye tracking for UX testing

GP3 HD Ultimate Bundle | Eye tracking for usability studies

I wonder which set I should buy.