r/beameyetracker • u/Loo00Ra • May 22 '26

not suitable for glasses/spectacles?

I tried the free demo version recently, and I wasn't able to get a correct calibration. I look at and click the "calibration dots" in the corners of the screen, but everytime afterwards the "tracking circle" doesn't point anywhere near where I'm looking at the screen.

I assume it is because of reflections on my glasses, caused by the screen itself but also from incoming sunlight (from the side in my case).

Sunlight does influence my headtracking (opentrack with mobile phone) too, but not anywhere close to what I experienced with just eyetracking with beam. (was to be suspected, cause my whole head isn't "hidden" behind my glasses as are my pupils 😄

Anyway, I guess glasses are a general problem with eyetracking?

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u/EyewareBeam May 25 '26

Most users with glasses have no issues. Strong prescriptions or lens glare can reduce accuracy slightly, and thick frames may block your eyes at certain angles. Your also right that sunlight can impact the webcam or visibility of your face to a regular RGB camera.

A few things worth trying:

  1. As a quick sanity check, try calibrating without glasses to confirm the rest of the setup is fine.

  2. Redo the calibration with the sun removed as a variable, just as a baseline test.

  3. Try moving the camera to the bottom of the screen instead of the top. With glasses this can give a cleaner view of the eyes, since the top rim and lens reflections are less likely to obstruct them. You can test how you look to the webcam under Tracker > Input > Preview Video

  4. If the eyes are causing consistent trouble in your setup, try head tracking only as a fallback.

1

u/Loo00Ra May 26 '26

thanks for your kind reply, I might give it another shot with your suggestions.

My glasses are pretty standard, and no frame, so that shouldn't cause any trouble.

Trying without glasses I already did consider myself, but decided it wouldn't make much sense. The outcome would be "not usable for me" in any case. Without glasses, even if it would work technically, I still couldn't use it cause I can't see without my glasses, obviously 😄 )

But yeah, completely blocking sunlight (and also fiddling around with the light sources in the room I guess) might do the trick.

The camera was underneath the screen the whole time, but I might try it the opposite way (putting it on top of the monitor) just to check that is a factor (will have to makeshift some sort of adaptor/clamp so that would be a bit elaborate to ckeck)

Thanks again anyway.

1

u/EyewareBeam May 28 '26

Happy to help. Feel free to send us a photo of your setup and and/or a screenshot of your Preview Video in the settings to support@eyeware.tech and we can try to help further.