Here is what I have done in order to make Tobii working with ELite Dangerous Horizons:
Go to %HOMEPATH%\AppData\Local\Frontier Developments\Elite Dangerous\Options\Bindings
for example: C:\Users\cmdr_speedy\AppData\Local\Frontier Developments\Elite Dangerous\Options\Bindings
rename Custom.1.8 to Custom.0.8
That’s it!
Cheers!!
eMarcel