Hi, currently Tobii is the world leader on this technology, so probably you should to contact them.

For my internship for my master's degree in computer science I start to work on this feature and I use their technology on a VR headset, but I don't know if it exists companies in research with better results.

Hi,

Thanks for your response. I'll be looking to that.

Yes, the Swedish company, Tobii, is a known player in providing eye tracking technology.

Yes. That's true. Many of them recommend tobii.

You can try Imotion products.

myGaze® Eye Tracker

http://www.mygaze.com/products/mygaze-eye-tracker/

Are you looking for a camera or an eye-tracker?

If you are looking for an eye tracker, then it will definitely depend on several questions that you need to answer.

Also, if you are looking for a camera that can be used to track the gaze points, you need to develop your own algorithm to track the gaze direction based on the pupil changes. Without having an IR light you won't be able to achieve high accuracy with compared to commercial eye trackers.