Hi @abirami,
In the Developers Guide for Unity, Page 27 the Gaze point data is discussed.
As you might have noticed, there are a couple of filtering options with respect to the Gaze Stream.
May I ask why the standard Gaze Stream (filtered/unfiltered) is not sufficient for your needs?
This should supply you the XY coordinates of where the user is looking on screen.
If this issue is that you wish to store and analyse the data, then that is another case and must be
accomplished with the Tobii Pro range of eye tracker as the storing of eye data is against the user
agreement included with the EyeX SDK.